Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chon chu voi snippets" » "cho chu voi snippets", "choi chu voi snippets", "chon chung voi snippets", "chon chua voi snippets", "chon chi voi snippets", "chon chu vi 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: (((("chon chu voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chon chu voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chon chu voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chon chu voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.