Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phu hoc chi snippets" » "phau hoc chi snippets", "phuc hoc chi snippets", "pho hoc chi snippets", "phu hoc chia snippets", "phu hoc cho snippets", "phu hoc 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 hoc chi 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 hoc chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phu hoc chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phu hoc chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.