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