Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong dao vo snippets" » "truong dao vo snippets", "trong dam vo snippets", "trong dan vo snippets", "trong dao voi snippets", "trong dao o snippets", "trong dao do 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: (((("trong dao vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong dao vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong dao vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong dao vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.