Perhaps you should try some spelling variations:
tranh thuat » trong thuat, tranh chua, tranh thai
theo chieu » theo tieu, theo chu, thi chieu
thuat hung » thuat dung, thuat ung, thuat xung
hung cong » nhung cong, hung cuong, phung cong
ho chieu » hoc thieu, doi chieu, mot chieu
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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 (ho chieu)) sach - canh tranh thuat hung cong ((dan toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - canh tranh thuat hung cong ((dan toan) OR (van toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - canh tranh thuat hung cong ((dan toan) or (van toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - canh tranh thuat hung cong ((dan toan) or (van toan)) cao*.