Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc chieu » hoc thieu, hoc hien, hoc dieu
trung kha » trung khoa, trung ha, truong khoa
trong san » trong cac, cong san, dong san
ho chieu » theo chieu, hoc thieu, doi chieu
kha dung » khoa dung, khao dung, nha dung
than cau » toan cau, phan cau, than cap
toan tap » toan ban

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

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