Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hanh tang » anh tang, hanh mang, hanh tung
tan trang » tan tran, ta trang, ban trang
ho chieu » hoc thieu, doi chieu, mot chieu
cong tan » cong tac, cong san, cong thanh
trang o » trang va

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: ((theo chieu) OR (ho chieu)) sach - ((hanh tang) OR (hanh trang)) va nhung cong tan trang o~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) sach - ((hanh tang) OR (hanh trang)) va nhung cong tan trang o~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) sach - ((hanh tang) OR (hanh trang)) va nhung cong tan trang o*.