Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gap dao cho snippets" » "gap do cho snippets", "tap dao cho snippets", "giay dao cho snippets", "gap cao cho snippets", "gap dac cho snippets", "gap dao ho 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: (((("gap dao 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: (((("gap dao cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gap dao cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gap dao cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.