Perhaps you should try some spelling variations:
chau phu » chau phi, chau au, chau tho
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
cau luc » cau truc, cau phuc
y dang » ky dang, _ dang, b dang
2 dang » 2 danh, _ dang, b dang
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y dang) OR (2 dang)) van hoa. hieu qua ((cau luc) or (chau phu)) van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y dang) OR (2 dang)) van hoa. hieu qua ((cau luc) OR (chau phu)) van hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y dang) OR (2 dang)) van hoa. hieu qua ((cau luc) or (chau phu)) van hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((y dang) OR (2 dang)) van hoa. hieu qua ((cau luc) or (chau phu)) van hanh vi cua te*.