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