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