Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
ho chiet » ho chieu, ho thiet, hoa thiet
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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: ((ho chiet) OR (hoc thiet)) tach - hanh ((trung cua) OR (trung tuan)) hang cong tan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) or (hoc thiet)) tach - hanh ((trung cua) OR (trung tuan)) hang cong tan toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) or (hoc thiet)) tach - hanh ((trung cua) OR (trung tuan)) hang cong tan toan ban*.