Perhaps you should try some spelling variations:
thien chinh » tien thinh, thien chien, thi chinh
theo chinh » te chinh, che chinh, thi chinh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
cao nhung » cho nhung, cam nhung, cao chung
van thanh » ban thanh, van tuan
tung cao » nung cao, truong cao, trung cap
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chinh) OR (thien chinh)) sach - thanh tung cao nhung cong ((dan than) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chinh) OR (thien chinh)) sach - thanh tung cao nhung cong ((dan than) OR (van thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chinh) OR (thien chinh)) sach - thanh tung cao nhung cong ((dan than) or (van thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chinh) OR (thien chinh)) sach - thanh tung cao nhung cong ((dan than) or (van thanh)) cau*.