Perhaps you should try some spelling variations:
thanh trang » thanh trung, thanh thang, thanh tran
hanh trang » thanh trung, canh tranh, hanh trinh
tieu sach » chieu sach, dien sach, te sach
dung cong » dung trong
tan dung » tran dung, tin dung, van dung
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 - ((hanh trang) or (thanh trang)) tan dung cong trinh ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((hanh trang) OR (thanh trang)) tan dung cong trinh ((toan cau) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - ((hanh trang) or (thanh trang)) tan dung cong trinh ((toan cau) OR (toan ban))*".