Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"truc dan can snippets" » "thuc dan can snippets", "tuc dan can snippets", "truc ban can snippets", "truc dan chan snippets", "truc dan canh snippets", "truc 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: (((("truc dan can 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 can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truc dan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truc dan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.