Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot dan cac snippets" » "mat dan cac snippets", "moi dan cac snippets", "mot lan cac snippets", "mot dan cach snippets", "mot dang cac snippets", "mot dan ca 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: (((("mot dan 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: (((("mot dan cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot dan cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.