Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi te chan snippets" » "khoi de chan snippets", "khoi he chan snippets", "choi tre chan snippets", "khoi te than snippets", "khoi le chan snippets", "khoi te chat 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: (((("khoi te chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi te chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi te chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi te chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.