Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc vi long snippets" » "hoc vi luong snippets", "hoc vi dong snippets", "hoc vi hong snippets", "hoc va long snippets", "hoc viet long 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 vi long 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 vi long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc vi long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc vi long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.