Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
hien sach » dien sach, kien sach, thien hach
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, luan ban
tung va » trung va, tuong va, vung va

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 (thien thanh)) - thanh ((tung va) or (dung va)) nhung cong anh tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (thien thanh)) - thanh ((tung va) OR (dung va)) nhung cong anh tuan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (thien thanh)) - thanh ((tung va) or (dung va)) nhung cong anh tuan ban*.