Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"when dan hoi snippets" » "when can hoi snippets", "phen dang hoi snippets", "nhan dan hoi snippets", "when dan hoc snippets", "when dai hoi snippets", "when dang khoi 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: (((("when dan hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("when dan hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( when dan hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when dan hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.