Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
cao thong » cao thuong, tao thong, cao phong
hoc hieu » hoc hien, doc hieu, hoc dieu
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hieu) OR (hoc thieu)) cach - ((thanh tung) or (thanh thuong)) cao thong cong san phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc thieu)) cach - ((thanh tung) OR (thanh thuong)) cao thong cong san phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc thieu)) cach - ((thanh tung) or (thanh thuong)) cao thong cong san phan cac".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc thieu)) cach - ((thanh tung) or (thanh thuong)) cao thong cong san phan cac*.