Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thanh dat o2 snippets" » "thanh san o2 snippets", "thanh hai o2 snippets", "thanh van o2 snippets", "thanh dat o snippets", "thanh dat 12 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: (((("thanh dat 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: (((("thanh dat o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thanh dat o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thanh dat o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.