Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi hinh o2 snippets" » "thi hanh o2 snippets", "thi minh o2 snippets", "thi thanh o2 snippets", "thi hinh o snippets", "thi hinh hoc snippets", "thi hinh hoa 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: (((("thi hinh o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi hinh o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi hinh o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi hinh o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.