Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
khong cong » thong cong, khong cang, chong cong
chau tinh » cuu tinh, ha tinh, cua tinh
cua khong » hua khong, cua phuong, cua thuong
cong tinh » cong trinh, cong vinh, long tinh
tinh hinh » tinh ninh, tinh binh, linh chinh
cong cua » cong cu, dong cua, huong cua
hinh can » chinh can, minh can, hinh dan

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) or (chau tinh)) - thanh cong cua khong cong tinh hinh can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chau tinh)) - thanh cong cua khong cong tinh hinh can.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chau tinh)) - thanh cong cua khong cong tinh hinh can*.