Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban dac hoi snippets" » "ban dan hoi snippets", "ban dau hoi snippets", "ban sac hoi snippets", "ban dai hoi snippets", "ban duoc hoi 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: (((("ban dac hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban dac hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban dac hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban dac hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.