Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van uu cho snippets" » "van luu cho snippets", "van du cho snippets", "van lu cho snippets", "van cu cho snippets", "van vu cho snippets", "van zu cho 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 uu cho 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 uu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van uu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van uu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.