Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hien sach » kien sach, chieu sach, vien bach
dien sach » dien anh
cua thong » cua thuong, cua khong, cua tong
tung cua » trung cua, tuong cua, dung cua
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cap » khan cap, thanh lap, thanh cac

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 hach))) or (dien sach)) - thanh tung cua thong cong ban than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien sach) OR (thien hach))) OR (dien sach)) - thanh tung cua thong cong ban than cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien sach) or (thien hach))) or (dien sach)) - thanh tung cua thong cong ban than cap*.