Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang thi doc snippets" » "dang thi doc snippets", "tang tai doc snippets", "hoang thi doc snippets", "tang thi voc snippets", "tang thi goc snippets", "tang thi loc 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: (((("tang thi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tang thi doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang thi doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang thi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.