Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc chau doc snippets" » "toc chau code snippets", "toc cham doc snippets", "moc chau doc snippets", "ngoc chau doc snippets", "toc chat doc snippets", "toc cau do snippets", "toc phau hoc 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: (((("toc chau 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: (((("toc chau doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc chau doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc chau doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.