Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao du cham snippets" » "dao tu cham snippets", "dao du chat snippets", "dao vu cham snippets", "dao duc cham snippets", "dao duy cham snippets", "dao do cham 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: (((("dao du cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao du cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao du cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao du cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.