Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi ben den snippets" » "khi nen den snippets", "chi ben den snippets", "khi ban den snippets", "khi ben chen snippets", "khi biet den 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: (((("khi ben den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi ben den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi ben den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi ben den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.