Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phi khi cham snippets" » "phi khi code snippets", "phi thi cham snippets", "phi khi tham snippets", "phi chin cham snippets", "phai khi cham snippets", "phoi khi cham snippets", "phi phi cham 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 khi cham 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 khi cham snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phi khi cham snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi khi cham snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.