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