Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"o hoi deu snippets" » "o doi deu snippets", "o hoi den snippets", "o phoi dieu snippets", "co hoi deu snippets", "o hoc deu snippets", "o hai deu 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: (((("o hoi deu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("o hoi deu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( o hoi deu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("o hoi deu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.