Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
tan phuong » tran phuong, tai phuong, van phuong
hieu manh » hieu nganh, dieu hanh, hien hanh
dap nhung » vap nhung, va nhung, dap ung
tung dap » tung dan, trung dai, tuong dan
cong tan » cong tac, cong san, cong thanh

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (chieu xanh)) - thanh tung dap nhung cong tan phuong cham~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (chieu xanh)) - thanh tung dap nhung cong tan phuong cham*.