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