Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc minh de snippets" » "hoc sinh de snippets", "hoc kinh de snippets", "hoc vinh de snippets", "hoc minh ve snippets", "hoc menh de 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 de 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 de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc minh de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc minh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.