Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van 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 ((chieu sang) or (chieu xanh)) - hanh ((trung cua) OR (trung tuan)) hang cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu xanh)) - hanh ((trung cua) OR (trung tuan)) hang cong van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (chieu xanh)) - hanh ((trung cua) OR (trung tuan)) hang cong van toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu xanh)) - hanh ((trung cua) OR (trung tuan)) hang cong van toan ban*.