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