Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang doi cu snippets" » "hang di cu snippets", "hang loi cu snippets", "huong doi cu snippets", "hang doi cua snippets", "hang doi co snippets", "hang doi ca 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 doi cu 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 doi cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang doi cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang doi cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.