Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu dong ve snippets" » "thuy dong ve snippets", "tu dong ve snippets", "thu cong ve snippets", "thu duong ve snippets", "thu dong va snippets", "thu long ve 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: (((("thu dong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu dong ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu dong ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu dong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.