Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc chat ho snippets" » "doc chat ho snippets", "duoc pham ho snippets", "hoc chat ho snippets", "duoc chat hoa snippets", "duoc chat cho snippets", "duoc chat 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: (((("duoc chat ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc chat ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc chat ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc chat ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.