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