Perhaps you should try some spelling variations:
thanh nhung » thanh hung, hanh nhung, tranh nhung
chiet tach » chieu sach
danh trung » dang trung, dinh trung, manh trung
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - ((danh trung) or (hanh trinh)) thanh nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - ((danh trung) OR (hanh trinh)) thanh nhung cong tan toan cau*.