Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
thanh tung » thanh cong
dong cong » duong cong, dung cong, dang cong
tung cao » nung cao, truong cao, trung cap
cao dong » cao dang, lao dong, cao cong
cong dan » cong san, cong tan, huong dan
gian cac » gian dan, gian cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tinh) or (trieu tinh)) - thanh tung cao dong cong dan gian cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (trieu tinh)) - thanh tung cao dong cong dan gian cac.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) or (trieu tinh)) - thanh tung cao dong cong dan gian cac*.