Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc so cua snippets" » "ngoc son cua snippets", "ngoc sy cua snippets", "nuoc so cua snippets", "ngoc co cua snippets", "ngoc do cua snippets", "ngoc bo cua 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 so cua 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 so cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc so cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc so cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.