Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho chat moi snippets" » "cao chat moi snippets", "cho phat moi snippets", "chao chao moi snippets", "cho nhat moi snippets", "cho thuat moi snippets", "cho cho moi 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: (((("cho chat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho chat moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho chat moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho chat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.