Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chuan van ca snippets" » "chuan san ca snippets", "chuan va ca snippets", "chuan vn ca snippets", "chuan van cau snippets", "chuan van cua snippets", "chuan 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: (((("chuan van ca 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 van ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chuan van ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chuan van ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.