Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu sach » chieu sach, hieu cach, dien sach
trung cua » truong cua, trung tuan, trung cap
tran tuan » tran xuan, tran quang, tran thanh
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu, hoc hien
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: doc hieu sach - thanh ((trung cua) or (tran tuan)) nhung cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - thanh ((trung cua) OR (tran tuan)) nhung cong manh toan tap.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - thanh ((trung cua) or (tran tuan)) nhung cong manh toan tap*.