Perhaps you should try some spelling variations:
phuong thong » phuong trong, thong thong, phuong dong
theo chieu » theo tieu, ho chieu, theo chu
mot chieu » doi chieu, ho chieu
hanh hang » thanh hang, hang hang, hanh han
hang cac » hang ca, hang cau, bang cac
van tang » van thang, van trang, van nang
tang ban » tang bang, tiang ban, tang van

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: ((mot chieu) OR (theo chieu)) sach - hanh hang cac ((phuong thong) OR (phuong hoang)) van tang ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (theo chieu)) sach - hanh hang cac ((phuong thong) OR (phuong hoang)) van tang ban~".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chieu)) sach - hanh hang cac ((phuong thong) OR (phuong hoang)) van tang ban*.