Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
hanh mang » nhanh mang, hanh trang, nhanh lang
theo thu » theo chu, theo tu, theo tieu
thu sach » tu sach, thuat sach, thuoc sach
cua dang » cua cong
toan cao » toan ban
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: theo thu sach - hanh mang ((cua ban) or (cua dang)) cong thanh ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo thu sach - hanh mang ((cua ban) OR (cua dang)) cong thanh ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo thu sach - hanh mang ((cua ban) or (cua dang)) cong thanh ((toan cao) or (toan tap))*.