Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thong cong » trong cong, tong cong, thong thong
hoc thien » hoc hien, hoc thieu, hoc thiet
thien ban » thien bang, thien van, phien ban
thanh lap » thanh san, thanh hai, thanh van
tuong va » truong va, thuong va, luong va
va thong » va thuong, va phuong, he thong
cong tac » cong ty
phan lap » phan dau

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien ban - thanh tuong va thong cong tac ((thanh lap) OR (phan lap))~".
• Adding a wildcard symbol may retrieve word variants: hoc thien ban - thanh tuong va thong cong tac ((thanh lap) OR (phan lap))*.