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