Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, hieu lang
trung dap » trung cap, trung dai, trung dam
hang cong » dang cong, hang nong, bang cong
dap hang » dat hang, dai hang, dai thang
cong san » cong tac
than cua » nhan cua, thai cua, ban cua
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (chieu sang)) - thanh trung dap hang cong san ((than cua) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (chieu sang)) - thanh trung dap hang cong san ((than cua) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (chieu sang)) - thanh trung dap hang cong san ((than cua) or (khan cap))*.