Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cham van du snippets" » "cham van code snippets", "pham van du snippets", "cham va du snippets", "chao van du snippets", "cham van duy snippets", "cham van dau snippets", "cham van de 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: (((("cham van du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cham van du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cham van du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham van du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.