Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van quan mot snippets" » "van ban mot snippets", "van qua mot snippets", "van quan doi snippets", "van quan sat 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: (((("van quan mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van quan mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van quan mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van quan mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.