Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gian viet dk snippets" » "gian viet da snippets", "gian viet du snippets", "gian viet duc snippets", "giao viet dk snippets", "gia viet dk 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: (((("gian viet dk snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian viet dk snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian viet dk snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian viet dk snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.