Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngan can cua snippets" » "ngan han cua snippets", "ngan van cua snippets", "ngan lan cua snippets", "ngan canh cua snippets", "ngan ban cua snippets", "ngan ca cua 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: (((("ngan can cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngan can cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngan can cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngan can cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.