Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
tranh cua » doanh cua, manh cua
dang cong » dung cong
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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 - hanh tranh cua ((thong cong) or (dang cong)) san ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh tranh cua ((thong cong) OR (dang cong)) san ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh tranh cua ((thong cong) or (dang cong)) san ((than cau) or (phan cau))*.