Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cao cong du snippets" » "cao cong code snippets", "cac cong du snippets", "cao dang du snippets", "cua cong du snippets", "cao cong dau snippets", "cao cong duc snippets", "cao cong duy 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: (((("python using java snippets") or ("cao cong du snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cao cong du snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( cao cong du snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cao cong du snippets"))) or ("locating bug core snippets"))*.