Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua trong » cua truong, cua trung, qua trong
cong tuan » cong luan, cong thanh, cong quang
hoc hieu » hoc thieu, hoc hien, doc hieu
tung cua » trung cua, tuong cua, dung cua
cong tan » cong tac, cong san, cong thanh
phan dau » phan tu, hang dau

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 manh - thanh tung cua trong ((cong tuan) or (cong tan)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tung cua trong ((cong tuan) OR (cong tan)) phan dau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tung cua trong ((cong tuan) or (cong tan)) phan dau*.