Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, chien tranh
thanh tuong » thanh thuong, thanh tung, thanh huong
hien hanh » dieu hanh
tuong cua » truong cua, huong cua, thong cua
dong song » dong son, song song, dong cong
van thanh » ban thanh, van tuan
cua dong » chua dong, cua cong, cua dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) or (hien hanh)) - thanh tuong cua dong song ((van thanh) or (van ban)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (hien hanh)) - thanh tuong cua dong song ((van thanh) OR (van ban)) cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (hien hanh)) - thanh tuong cua dong song ((van thanh) or (van ban)) cap*.