Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien hach » thien thanh, hien hanh
tuan thanh » thuan thanh, quan thanh, tran thanh
thanh phan » thanh pho, thanh san, thanh toan
hieu cach » hieu cac, chieu sach, hieu ca
trung van » truong van, trong van, trung va
cong tuan » cong tan, cong luan, cong thanh
ban cong » bang cong, van cong, phan cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) or (hieu cach)) - thanh trung van ban cong tuan thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (hieu cach)) - thanh trung van ban cong tuan thanh phan.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (hieu cach)) - thanh trung van ban cong tuan thanh phan*.