Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong hoc nhe snippets" » "dong co nhe snippets", "dong luc nhe snippets", "dong hoc nghe snippets", "dong hoc he snippets", "dong hoc nha 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: (((("dong hoc nhe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong hoc nhe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong hoc nhe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hoc nhe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.