Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang thi doc snippets" » "hoang thi doc snippets", "dang khoi doc snippets", "dang thi voc snippets", "dang thi goc snippets", "dang thi loc 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: (((("dang thi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang thi doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang thi doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang thi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.