Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
cong hoan » cong hoa, dong hoa, cong san
hoan phan » hoa phan, toan phan, doan phan
phan cau » phan dau, phan cac, phan tu

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 - thanh ((trung cua) or (trung cap)) nhung cong hoan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - thanh ((trung cua) OR (trung cap)) nhung cong hoan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh ((trung cua) or (trung cap)) nhung cong hoan phan cau*.