Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham dao cau snippets" » "tham dam cau snippets", "tham do cau snippets", "thao dao cau snippets", "tham dat cau snippets", "tham da cau snippets", "tham tao cau 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 dao cau 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 dao cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham dao cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham dao cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.