Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van du cham snippets" » "van du code snippets", "van tu cham snippets", "van du chat snippets", "van vu cham snippets", "van duy cham snippets", "van dau cham snippets", "van de cham 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 cham 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 cham snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van du cham snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van du cham snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.