Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao thi bo snippets" » "cau thi bo snippets", "cao tai bo snippets", "dao thi bo snippets", "cao thi bao snippets", "cao thi mo snippets", "cao thi ba 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: (((("cao thi bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao thi bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao thi bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao thi bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.