Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hai mo snippets" » "cuc hai mo snippets", "duc dai mo snippets", "duc hau mo snippets", "duc hai moi snippets", "duc khai mo snippets", "duc hai so 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: (((("duc hai mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hai mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc hai mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hai mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.