Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
hien sach » dien sach, thien hach, chieu sach
kien sach » dien sach, vien bach, kien mac
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
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: hoc ((hien sach) or (kien sach)) - hanh ((tang cua) or (mang cua)) nhung cong thanh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (kien sach)) - hanh ((tang cua) OR (mang cua)) nhung cong thanh toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (kien sach)) - hanh ((tang cua) or (mang cua)) nhung cong thanh toan tap*.