Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
tham trong » pham trong, thay trong, than trong
cong thanh » dong thanh, cong trinh, cong tan
tung tham » tuong tham, tung pham, cung tham
ho chieu » hoc thieu, doi chieu, mot chieu
than cau » phan cau, than cap, thanh chau
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: ((theo chieu) OR (ho chieu)) sach - thanh tung tham trong cong thanh ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - thanh tung tham trong cong thanh ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - thanh tung tham trong cong thanh ((than cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - thanh tung tham trong cong thanh ((than cau) or (toan cau))*.