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