Perhaps you should try some spelling variations:
thien nang » thien bang, thien dang, trien nang
thong cong » trong cong, tong cong, thong thong
thiet anh » thien anh, thuyet anh, thien danh
thanh lap » thanh san, phan lap, thanh hai
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
than cap » khan cap, thanh cac, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toan ((thiet anh) or (thien nang)) - canh tranh va thong cong dan ((than cap) OR (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toan ((thiet anh) OR (thien nang)) - canh tranh va thong cong dan ((than cap) OR (thanh lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toan ((thiet anh) or (thien nang)) - canh tranh va thong cong dan ((than cap) OR (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: toan ((thiet anh) or (thien nang)) - canh tranh va thong cong dan ((than cap) OR (thanh lap))*.