Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dai viet goc snippets" » "mai viet goc snippets", "dao viet goc snippets", "tai viet goc snippets", "dai viet duc snippets", "dai viet o snippets", "dai viet 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: (((("dai viet goc 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 goc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dai viet goc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai viet goc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.