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