Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
trung cam » trung tam, trung nam, trung ca
trung cap » truong cao, trung tam
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van 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) or (chinh sach)) - thanh ((trung cam) OR (trung cap)) nhung cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (chinh sach)) - thanh ((trung cam) OR (trung cap)) nhung cong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien hach) or (chinh sach)) - thanh ((trung cam) OR (trung cap)) nhung cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (chinh sach)) - thanh ((trung cam) OR (trung cap)) nhung cong dan phan cau*.