Perhaps you should try some spelling variations:
trong thuong » thong thuong, trong tuong, cong thuong
trong huong » trong chuong, truong huong, thong huong
thieu tinh » trieu tinh, thien tinh, lieu tinh
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tri » thanh tra, thanh tai, chinh tri
tri tuan » tri quan, tran tuan, tri tue
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu tinh) OR (chieu tinh)) - thanh tri tuan ((trong huong) or (trong thuong)) dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (chieu tinh)) - thanh tri tuan ((trong huong) OR (trong thuong)) dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tinh) OR (chieu tinh)) - thanh tri tuan ((trong huong) or (trong thuong)) dan chan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) OR (chieu tinh)) - thanh tri tuan ((trong huong) or (trong thuong)) dan chan cau*.