Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong san » cong tac
chay cau » chay cao, chay chua, cay ca
cay co » cac co, tay co, cay cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - than ((tinh cua) OR (trinh cua)) nhung cong san ((chay cau) or (cay co))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - than ((tinh cua) OR (trinh cua)) nhung cong san ((chay cau) OR (cay co)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chinh sach - than ((tinh cua) OR (trinh cua)) nhung cong san ((chay cau) or (cay co))".
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - than ((tinh cua) OR (trinh cua)) nhung cong san ((chay cau) or (cay co))*.