Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong tri he snippets" » "phong trao he snippets", "phong tuc he snippets", "nhung tri he snippets", "phong tri le snippets", "phong tai he snippets", "phong tri ve 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: (((("phong tri he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phong tri he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong tri he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong tri he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.