Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
thong hong » thong thong, thong hoang, thong huong
hien hanh » dieu hanh
cua thong » cua thuong, cua khong, cua tong
hong manh » hoang manh, hong hanh, hong anh
manh toan » thanh toan, anh tuan, tinh toan
hieu cua » hieu qua, dieu cua, bieu cua
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 ((hieu cua) or (hien hanh)) - ((hanh trang) or (thanh trung)) cua thong hong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu cua) OR (hien hanh)) - ((hanh trang) OR (thanh trung)) cua thong hong manh toan cao*.