Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho tinh son snippets" » "cho sinh son snippets", "cho minh son snippets", "tho tinh son snippets", "cho tinh toan snippets", "cho dinh so snippets", "cho tinh hoc 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: (((("cho tinh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho tinh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho tinh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho tinh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.