Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhac dan hoi snippets" » "nhan dan hoi snippets", "hoc dan hoi snippets", "cac dan hoi snippets", "nhac dan hoc snippets", "nhac dai hoi snippets", "nhac dang khoi 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: (((("nhac dan hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhac dan hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhac dan hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhac dan hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.