Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang nhat de snippets" » "hoang nhat de snippets", "dang nhat de snippets", "hang nha de snippets", "hang nhat ve snippets", "hang nhat le snippets", "hang chat deo 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: (((("hang nhat 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: (((("hang nhat de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang nhat de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang nhat de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.