Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi luc cho snippets" » "thi cuc cho snippets", "thi loc cho snippets", "thi lu cho snippets", "thi luc cao snippets", "thi nuoc cho snippets", "thi luat 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: (((("thi luc 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: (((("thi luc cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi luc cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi luc cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.