Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tung tuan » hung tuan, quang tuan, trang tuan
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) OR (hieu manh)) - thanh ((tung tuan) or (trung tuan)) nhung cong tan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh ((tung tuan) OR (trung tuan)) nhung cong tan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - thanh ((tung tuan) or (trung tuan)) nhung cong tan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - thanh ((tung tuan) or (trung tuan)) nhung cong tan toan tap*.