Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, doi chieu, mot chieu
dung cua » dung luan, dung cho
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan 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 chieu) OR (hoc thieu)) sang - hanh ((dung cua) OR (trung tuan)) hang cong dan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sang - hanh ((dung cua) or (trung tuan)) hang cong dan toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sang - hanh ((dung cua) or (trung tuan)) hang cong dan toan tap*.