Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
truong cong » trong cong, truong long, truong chung
truong dong » trong dong, truong dang, tuong dong
hieu xanh » chieu xanh, hieu manh, hieu nganh
khoa kham » kho khan, khoa than
doc hieu » toc thieu, hoc thieu, hoc hien
khoa cam » khoan cam, khoa ma, hoa cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - thanh tuong duong ((truong cong) or (truong dong)) tac ((khoa cam) OR (khoa kham))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh tuong duong ((truong cong) OR (truong dong)) tac ((khoa cam) OR (khoa kham)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh tuong duong ((truong cong) or (truong dong)) tac ((khoa cam) OR (khoa kham))".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh tuong duong ((truong cong) or (truong dong)) tac ((khoa cam) OR (khoa kham))*.