Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khao vi hoc snippets" » "khao noi hoc snippets", "khang vi hoc snippets", "khao van hoc snippets", "khao li hoc snippets", "khao va hoc 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: (((("khao vi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khao vi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khao vi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khao vi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.