Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trang » thanh trung, thanh thang, thanh tran
hien nhanh » hien hanh, tien thanh, dien thanh
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
tan nguyen » toan nguyen, tran nguyen, tuan nguyen
cong tan » cong tac, cong san, cong thanh

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 (thien thanh)) - ((thanh trang) or (hanh trang)) va nhung cong tan nguyen van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (thien thanh)) - ((thanh trang) OR (hanh trang)) va nhung cong tan nguyen van.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) OR (thien thanh)) - ((thanh trang) or (hanh trang)) va nhung cong tan nguyen van".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) OR (thien thanh)) - ((thanh trang) or (hanh trang)) va nhung cong tan nguyen van*.