Perhaps you should try some spelling variations:
thanh trung » thanh tung
phai nhuong » phan thuong, pham thuong, pham chuong
trung phai » trung phan, trung hai, trung phat
hoc chieu » hoc thieu, ho chieu, hoc dieu
cong tap » cuong tap, cong tan, tong tap
cong tac » cong ty
quan cau » quang cao, toan cau, quan ha

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: ((hoc chieu) OR (hoc hien)) tinh - thanh trung phai nhuong ((cong tap) OR (cong tac)) quan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc hien)) tinh - thanh trung phai nhuong ((cong tap) OR (cong tac)) quan cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) tinh - thanh trung phai nhuong ((cong tap) OR (cong tac)) quan cau*.