Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chu cua doc snippets" » "chu cua code snippets", "chuc cua doc snippets", "hu cua doc snippets", "chi cua doc snippets", "chu cua duoc snippets", "chu cua duc snippets", "chu cua 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: (((("chu cua 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: (((("chu cua doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chu cua doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu cua doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.