Perhaps you should try some spelling variations:
thanh tung » thanh cong
khong cong » thong cong, khong cang, chong cong
sinh sach » sang sach, sinh danh, sinh sinh
cua khong » hua khong, cua phuong, cua thuong
sinh san » trinh san, sinh vat, sinh va
tung cua » trung cua, tuong cua, dung cua
cong tac » cong ty
tac pham » thuc pham, san pham
pham ca » pham can, pham ma, pham 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 ((((sinh sach) OR (chinh sach))) or (sinh san)) - thanh tung cua khong cong tac pham ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((sinh sach) OR (chinh sach))) OR (sinh san)) - thanh tung cua khong cong tac pham ca.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((sinh sach) OR (chinh sach))) or (sinh san)) - thanh tung cua khong cong tac pham ca".
• Adding a wildcard symbol may retrieve word variants: hoc ((((sinh sach) OR (chinh sach))) or (sinh san)) - thanh tung cua khong cong tac pham ca*.