Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc viec cu snippets" » "hoc viet cu snippets", "hoc vien cu snippets", "hoa viec cu snippets", "hoc viec cua snippets", "hoc viec su snippets", "hoc viec xu 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 viec cu 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 viec cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc viec cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc viec cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.