Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hao mong snippets" » "van hao gong snippets", "van hao kong snippets", "van hao mon snippets", "van dao mong snippets", "van ha mong snippets", "van bao mong 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 mong 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 mong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hao mong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hao mong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.