Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang van moi snippets" » "dang van moi snippets", "tang van moi snippets", "lang van moi snippets", "nang van muoi snippets", "nang van loi snippets", "nang ban moi 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 van moi 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 van moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang van moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang van moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.