Perhaps you should try some spelling variations:
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, cong tan
tieu sach » chieu sach, dien sach, te sach
cua nhung » va nhung
cong manh » cong danh, duong manh, hoang manh
tung cua » trung cua, tuong cua, dung cua
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 tieu sach - thanh tung cua nhung ((cong manh) OR (cong thanh)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - thanh tung cua nhung ((cong manh) OR (cong thanh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh tung cua nhung ((cong manh) OR (cong thanh)) toan cau*.