Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nen tu chon snippets" » "nen tu choi snippets", "nen tu hon snippets", "nen lua chon snippets", "nen su chon snippets", "yen tu chon 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: (((("nen tu chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nen tu chon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nen tu chon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nen tu chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.