Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
hien hanh » dieu hanh
hanh phan » thanh phan, anh phan, hanh han
cua nhung » va nhung
van thanh » ban thanh, van tuan
thanh cao » thanh ca, thanh cac, thanh thao
phan cua » nhan cua, than cua, phat cua
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((thieu sach) or (chiet tach))) or (hien hanh)) - hanh phan cua nhung cong van thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu sach) OR (chiet tach))) OR (hien hanh)) - hanh phan cua nhung cong van thanh cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu sach) or (chiet tach))) or (hien hanh)) - hanh phan cua nhung cong van thanh cao*.