Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van thi cach snippets" » "van thi code snippets", "van thi bach snippets", "van thi canh snippets", "van tho cach snippets", "van tai cach snippets", "dan thi cach snippets", "van thu cach 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 thi cach 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 thi cach snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van thi cach snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van thi cach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.