Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc nganh he snippets" » "hoc nhanh he snippets", "hoc nganh che snippets", "hoc nganh ke snippets", "hoc nganh nghe 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: (((("hoc nganh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc nganh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc nganh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc nganh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.