Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
phuong thao » phuong phap, phuong thuc
theo chieu » theo tieu, theo chu, thi chieu
hanh trang » thanh trung, canh tranh, hanh trinh
hanh tang » anh tang, hanh mang, hanh tung
thao toan » thuat toan, thanh toan, tap toan
ho chieu » hoc thieu, doi chieu, mot chieu
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - ((hanh tang) OR (hanh trang)) va dung phuong thao toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) xanh - ((hanh tang) or (hanh trang)) va dung phuong thao toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) xanh - ((hanh tang) or (hanh trang)) va dung phuong thao toan cau*.