Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat ngan can snippets" » "dai ngan can snippets", "dan ngan can snippets", "dat ngap can snippets", "dat ngan han snippets", "dat ngan van snippets", "dat ngan lan 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: (((("dat ngan 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: (((("dat ngan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat ngan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat ngan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.