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