Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua dam tong snippets" » "cua dam tiong snippets", "cua dam tuong snippets", "cua dam cong snippets", "cua dan tong snippets", "cua dai tong snippets", "cua tam tong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 dam tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua dam tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua dam tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua dam tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.