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