Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thieu hanh » thien chanh, thieu khang, thi hanh
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
tong cong » trong cong, cong cong, dung cong
cong san » cong tac
san chan » san chang, dan chan, san chay
chan cac » phan cac, chon cac, nhan cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu hanh) OR (thien thanh)) - thanh ((trung cua) or (trung cap)) tong cong san chan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu hanh) OR (thien thanh)) - thanh ((trung cua) OR (trung cap)) tong cong san chan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu hanh) OR (thien thanh)) - thanh ((trung cua) or (trung cap)) tong cong san chan cac".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu hanh) OR (thien thanh)) - thanh ((trung cua) or (trung cap)) tong cong san chan cac*.