Perhaps you should try some spelling variations:
truong phuong » truong chung, truong trung, dung phuong
cua truong » cua trung, xuan truong, cac truong
hanh doanh » hang doanh, chinh doanh, doanh doanh
phuong dan » phuong danh, phuong doan, huong dan
dien sach » dien anh
doanh cua » doanh luan
hieu cac » hieu luc, hieu va, hieu van
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: doc ((dien sach) or (hieu cac)) - hanh doanh cua truong phuong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((dien sach) OR (hieu cac)) - hanh doanh cua truong phuong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: doc ((dien sach) or (hieu cac)) - hanh doanh cua truong phuong dan chan cau*.