Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hau chon cac snippets" » "hau chon code snippets", "hau can cac snippets", "tap chon cac snippets", "cau chan cac snippets", "hau cho cac snippets", "hau thong cac snippets", "hau hoc cac 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: (((("hau chon cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hau chon cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hau chon cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hau chon cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.