Perhaps you should try some spelling variations:
thanh thanh » nhanh thanh, thanh toan, thanh phan
cong thanh » dong thanh, cong trinh, cong tan
thanh cao » thanh ca, thanh cac, thanh thao
toc hieu » toc thieu, hoc thieu, thuc hieu
doc hieu » toc thieu, hoc thieu, hoc hien
tuong va » truong va, thuong va, luong va
vung va » dung va, luong va, duong 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 ((vung va) or (tuong va)) trong cong thanh thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc hieu) OR (doc hieu)) cach - thanh ((vung va) OR (tuong va)) trong cong thanh thanh cao.
• Adding a wildcard symbol may retrieve word variants: ((toc hieu) or (doc hieu)) cach - thanh ((vung va) or (tuong va)) trong cong thanh thanh cao*.