Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phi hoc khi snippets" » "phoi hoc khi snippets", "khi hoc khi snippets", "pho hoc khi snippets", "phi hoc khoi snippets", "phi hoc khia snippets", "phi hoc ki snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi hoc khi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( phi hoc khi snippets ) or ( python using java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("phi hoc khi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.