Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tang » hanh trang, anh tang, hanh mang
chu sach » cau sach, chieu sach, chuc hach
thu sach » tu sach, thuat sach, thuoc sach
cong van » cong vang, cong san, song van
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu
tang va » trang va, tang van, thang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu sach) OR (thu sach)) - hanh tang va nhung cong van ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sach) OR (thu sach)) - hanh tang va nhung cong van ((than cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu sach) OR (thu sach)) - hanh tang va nhung cong van ((than cau) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: theo ((chu sach) OR (thu sach)) - hanh tang va nhung cong van ((than cau) or (phan cau))*.