Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang thi co snippets" » "dang thi co snippets", "tang thi co snippets", "nang tai co snippets", "nang thi mo snippets", "nang thi cu snippets", "nang thi bo snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("nang thi co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang thi co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang thi co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang thi co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.