Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban cac moi snippets" » "bang cac moi snippets", "ban can moi snippets", "ban sac moi snippets", "ban cac mon snippets", "ban cac toi snippets", "ban cac thoi 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 cac moi 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 cac moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban cac moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban cac moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.