Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trong » hanh trang, anh trong, hinh trong
den thanh » de thanh, dinh thanh, dong thanh
trong van » trong cac
trong dan » trong dang, trong san, trong tan
van dung » van dong, xay dung, tin dung
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien nhanh) or (den thanh)) - hanh trong van dung trong dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (den thanh)) - hanh trong van dung trong dan phan dau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (den thanh)) - hanh trong van dung trong dan phan dau*.