Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri mai cong snippets" » "tri tai cong snippets", "tri may cong snippets", "tri moi cong snippets", "thi mai cong snippets", "tri mac cong 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: (((("tri mai cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri mai cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri mai cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri mai cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.