It seems that you are looking for a paper entitled "impact of price consciousness on brand switching" to develop your relevant hypotheses. However, I suggest that if you cannot find a paper with such a title, simply try to find papers which are close to your topic. For example, find a paper which has been used " price consciousness" as an independent construct and find another paper which has used "brand switching" as a dependent construct. Then, relate them to your topic. For instance, the following papers may be used
"The effects of advertising on brand switching and repeat purchasing" and "The effect of consumer price consciousness on private label purchase".
Please note that the above papers are just as examples.
Another method that you can use is that you can write your argument for close terms to "price consciousness" and "brand switching". For example, you can argue that "price consciousness (price awareness)" leads to "A" which is related to "brand switching" or for that reason, customers may switch to the other brand or... .