Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao thi moi snippets" » "cau thi moi snippets", "cao tai moi snippets", "dao thi moi snippets", "cao thi mai snippets", "cao thi mo snippets", "cao thi hoai 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 moi 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 moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao thi moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao thi moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.