Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao hat doi snippets" » "cao chat doi snippets", "cao hoat doi snippets", "cau hat doi snippets", "cao thay doi snippets", "cao hang doi 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 hat doi 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 hat doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao hat doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao hat doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.