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