Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"khoi nhat vu snippets" » "khoi thuat vu snippets", "khong nhat vu snippets", "hoi nhap vu snippets", "khoi nhat ve snippets", "khoi nhat tu snippets", "khoi nhat ngu 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: (((("khoi nhat vu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi nhat vu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( khoi nhat vu snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi nhat vu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.