Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
thuat sach » thuat lanh, thuat san
trang phan » trung phan, truong phan, trang phong
phan xuong » phan cong
xuong cong » luong cong, duong cong, cuong cong
thuat tac » thuat tach, thuat tao, thuat tai
cong toan » cong tan, cong hoan, cong tuan
toan phai » toan phan, khoan phai, toan tai
phai tap » pha tap, phan tap, hai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thuat tac) or (thuat sach)) - hanh trang phan xuong cong toan phai tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thuat tac) OR (thuat sach)) - hanh trang phan xuong cong toan phai tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thuat tac) or (thuat sach)) - hanh trang phan xuong cong toan phai tap*.