Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhanh lang » nhanh quang, nhanh thang, nhan dang
hanh mang » nhanh mang, hanh trang, thanh hang
dung cong » dung trong
theo yeu » theo tieu, thiet yeu, theo chu
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau
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: ((theo chieu) or (theo yeu)) sach - ((hanh mang) OR (nhanh lang)) va dung cong tan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo yeu)) sach - ((hanh mang) OR (nhanh lang)) va dung cong tan tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo yeu)) sach - ((hanh mang) OR (nhanh lang)) va dung cong tan tran cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo yeu)) sach - ((hanh mang) OR (nhanh lang)) va dung cong tan tran cau*.