Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khao van hoe snippets" » "hao van hoe snippets", "thao van hoe snippets", "chao van hoe snippets", "khao van hoa snippets", "khao van hoc snippets", "khao van hieu 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 van hoe 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 van hoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khao van hoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khao van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.