Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac cao dong snippets" » "tac cao dang snippets", "tac lao dong snippets", "tac cao cong snippets", "tao cao dong snippets", "tay cao dong snippets", "tac bao dong 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: (((("tac cao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac cao dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac cao dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac cao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.