Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chau can moi snippets" » "hau can moi snippets", "chau van moi snippets", "chau cay moi snippets", "chau ban moi snippets", "chau cac moi snippets", "chau chat 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: (((("chau can 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: (((("chau can moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chau can moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chau can moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.