Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc minh son snippets" » "hoc sinh son snippets", "hoc kinh son snippets", "hoc vinh son snippets", "hoc tinh son snippets", "hoc minh toan snippets", "hoc dinh so 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: (((("hoc minh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc minh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc minh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc minh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.