Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua triet le snippets" » "cua viet le snippets", "su triet le snippets", "va triet le snippets", "cua triet ly snippets", "cua triet li snippets", "cua trieu le 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 triet le 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 triet le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua triet le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua triet le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.