Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang tham do snippets" » "nang cham do snippets", "hang tham do snippets", "nang tam do snippets", "nang thai do snippets", "nang pham do snippets", "nang tham du 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: (((("nang tham do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang tham do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang tham do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang tham do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.