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