Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van cau hon snippets" » "van cau code snippets", "van dau hon snippets", "van hau hon snippets", "van chat hon snippets", "van cau hoi snippets", "van cau hoa snippets", "van ca hon 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 cau hon 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 cau hon snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van cau hon snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van cau hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.