Perhaps you should try some spelling variations:
phuong thanh » phong thanh, truong thanh, phuong thao
dung phuong » dung thuong, bang phuong, dung chung
thanh toan » thanh hoa, thanh san, tinh toan
doi chieu » doc hieu, doi chi, mot chieu
hanh nang » ganh nang, hanh mang, hanh trang
ho chieu » theo chieu, hoc thieu, mot chieu
anh nang » ganh nang, anh bang, anh dang
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) sach - ((hanh nang) or (anh nang)) va dung phuong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - ((hanh nang) OR (anh nang)) va dung phuong thanh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - ((hanh nang) or (anh nang)) va dung phuong thanh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - ((hanh nang) or (anh nang)) va dung phuong thanh toan cau*.