Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"san van hoi snippets" » "tan van hoi snippets", "luan van hoi snippets", "tran van hoi snippets", "san van choi snippets", "san van hoai snippets", "san van 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: (((("san van 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: (((("san van hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( san van hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("san van hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.