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