Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tap dac cho snippets" » "tap cac cho snippets", "tap xac cho snippets", "tap dai cho snippets", "tap day cho snippets", "tap danh cho 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: (((("tap dac cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tap dac cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tap dac cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tap dac cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.