Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cho chi cua snippets" » "cho chi code snippets", "ho chi cua snippets", "cho chu cua snippets", "cho ghi cua snippets", "cho chi cuc snippets", "cho khi cua snippets", "cho cuoi cua 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: (((("cho chi cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho chi cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cho chi cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho chi cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.