Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham dam cho snippets" » "thuat dam cho snippets", "thanh dam cho snippets", "tham tham cho snippets", "tham dam choi snippets", "tham dac cho snippets", "tham day 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: (((("tham dam 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: (((("tham dam cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham dam cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham dam cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.