Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phi chat hoc snippets" » "phi chat code snippets", "phap chat hoc snippets", "nghi chat hoc snippets", "pham chat hoc snippets", "phi chat hoa snippets", "phi chat thom snippets", "phi cho hoc snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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

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