Perhaps you should try some spelling variations:
thuyet thiet » thuyet viet, thuat thiet, thuat nhiet
thiet tach » chiet tach, thien hach, thuat tach
nhanh dung » nhanh dong, hanh dung, nhanh hung
luan tang » luan nang, lan tang, xuan trang
cong lang » cong vang, cong luong, cong quang
thanh tai » thanh hai, thanh toan, doanh tai
cong van » cong vang, cong san, song van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuyet thiet tach - nhanh dung luan tang ((cong van) or (cong lang)) thanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuyet thiet tach - nhanh dung luan tang ((cong van) OR (cong lang)) thanh tai.
• Adding a wildcard symbol may retrieve word variants: thuyet thiet tach - nhanh dung luan tang ((cong van) or (cong lang)) thanh tai*.