Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
dung trung » dung trong, quang trung, dung ung
trung binh » trong binh, thuong binh, tran binh
doanh qua » doanh quan, danh qua, doanh quang
doanh cua » doanh luan
quan cau » quang cao, toan cau, quan ha
tuan cu » tuan tu, quan cua, tuan thu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu manh - hanh ((doanh qua) OR (doanh cua)) dung trung binh ((tuan cu) OR (quan cau))~.
• Adding a wildcard symbol may retrieve word variants: toc thieu manh - hanh ((doanh qua) or (doanh cua)) dung trung binh ((tuan cu) or (quan cau))*.