Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trao voi can snippets" » "tao voi can snippets", "trao doi can snippets", "trao khoi can snippets", "trao voi cac snippets", "trao voi cong snippets", "trao voi hang 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: (((("trao voi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trao voi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trao voi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trao voi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.