Perhaps you should try some spelling variations:
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu
tung va » trung va, tuong va, dung va

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: "((doi chieu) OR (hoc thieu)) sang - thanh tung va nhung ((cong ban) OR (cong tan)) phan cau~".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (hoc thieu)) sang - thanh tung va nhung ((cong ban) OR (cong tan)) phan cau*.