Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cu khi cac snippets" » "cu khi code snippets", "cu khai cac snippets", "cu khi sac snippets", "cu khi cham snippets", "co khi cac snippets", "cu chi cac snippets", "vu khi 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: (((("cu khi 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: (((("cu khi cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cu khi cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cu khi cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.