Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan tinh son snippets" » "luan tinh son snippets", "ban tinh son snippets", "man tinh son snippets", "lan tinh toan snippets", "lan dinh so snippets", "lan tinh hoc 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: (((("lan tinh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan tinh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan tinh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan tinh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.