Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh phan » thanh pho, thanh san, thanh toan
toc hieu » toc thieu, hoc thieu, thuc hieu
doc hieu » toc thieu, hoc thieu, hoc hien
tuong va » truong va, thuong va, luong va
phan cao » phan cac, phan co, phan cau
tung va » trung va, dung va, vung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc hieu) or (doc hieu)) cach - thanh ((tung va) or (tuong va)) trong cong thanh phan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc hieu) OR (doc hieu)) cach - thanh ((tung va) OR (tuong va)) trong cong thanh phan cao.
• Adding a wildcard symbol may retrieve word variants: ((toc hieu) or (doc hieu)) cach - thanh ((tung va) or (tuong va)) trong cong thanh phan cao*.