Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khao dat doc snippets" » "khao sat doc snippets", "khao danh doc snippets", "chap dat doc snippets", "khao dat duoc snippets", "khao day doc snippets", "khao dat nuoc 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 dat doc 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 dat doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khao dat doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khao dat doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.