Perhaps you should try some spelling variations:
thanh tung » thanh cong
trong dang » truong dang, trong dan, trong dong
doi chieu » doc hieu, doi chi, mot chieu
dang toan » dang tran, dan toan, dung toan
ho chieu » theo chieu, hoc thieu, mot chieu
vat dung » van dung, va dung, viet dung
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (ho chieu)) sach - ((thanh trung) or (thanh tung)) vat dung trong dang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) sach - ((thanh trung) OR (thanh tung)) vat dung trong dang toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) sach - ((thanh trung) or (thanh tung)) vat dung trong dang toan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (ho chieu)) sach - ((thanh trung) or (thanh tung)) vat dung trong dang toan cau*.