Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc cuoi cua snippets" » "hoc cuon cua snippets", "hoc nguoi cua snippets", "hoc cao cua snippets", "hoc hoi cua snippets", "hoc doi cua snippets", "hoc co cua 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 cuoi cua 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 cuoi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc cuoi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc cuoi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.