Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham lanh co snippets" » "tham canh co snippets", "tham lang co snippets", "tham manh co snippets", "tham anh co snippets", "tham danh co 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 lanh co 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 lanh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham lanh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham lanh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.