Perhaps you should try some spelling variations:
thien hach » thien thanh
thanh tung » thanh cong
hien sach » dien sach, kien sach, chieu sach
hien hanh » dieu hanh
dung cong » dung trong
van thang » van thanh, van khang, van hang
thang cap » thong cap, than cap, trung cap
tung cua » trung cua, tuong cua, dung cua
cua dung » cua dang, cua dong, qua dung
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 ((hien sach) or (((thien hach) OR (hien hanh)))) - thanh tung cua dung cong van thang cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (((thien hach) OR (hien hanh)))) - thanh tung cua dung cong van thang cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sach) or (((thien hach) OR (hien hanh)))) - thanh tung cua dung cong van thang cap*".