Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac dieu toi snippets" » "cac kieu toi snippets", "cau dieu toi snippets", "cac bieu toi snippets", "cac dieu tuoi snippets", "cac dieu tri snippets", "cac diep toi 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: (((("cac dieu toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac dieu toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac dieu toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac dieu toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.