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