Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung tuan » trung thanh, trung tam, tran tuan
khong cong » thong cong, khong cang, chong cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cua » truong cua, trung cap, dung cua
cong tac » cong ty
chon cau » chon chu, thong cau, chinh cau
chon cac » cho cac, thong cac, hoc cac

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 tinh - thanh ((trung cua) OR (trung tuan)) khong cong tac ((chon cau) or (chon cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - thanh ((trung cua) OR (trung tuan)) khong cong tac ((chon cau) OR (chon cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - thanh ((trung cua) OR (trung tuan)) khong cong tac ((chon cau) or (chon cac))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - thanh ((trung cua) OR (trung tuan)) khong cong tac ((chon cau) or (chon cac))*.