Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"web song cho snippets" » "web huong cho snippets", "web bang cho snippets", "nep song cho snippets", "web dong cho snippets", "web sang cho snippets", "web rong cho 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: (((("web song cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("web song cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( web song cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("web song cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.