Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chua vu cham snippets" » "chua va cham snippets", "cua vu cham snippets", "chua cu cham snippets", "chua vu kham snippets", "chua tu cham 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: (((("chua vu cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chua vu cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chua vu cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chua vu cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.