Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hao yong snippets" » "van heo yong snippets", "van hao gong snippets", "van hao kong snippets", "van dao yong snippets", "van ha yong snippets", "van bao yong 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: (((("van hao yong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van hao yong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hao yong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hao yong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.