Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
trung chan » trung phan, trung can, trung nhan
trong chan » trong chuan, trong cham, trong can
thi kieu » thi kiem, thi dieu, thi kim
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho lieu) or (thi kieu)) tinh - thanh ((trung chan) OR (trong chan)) thuong cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho lieu) OR (thi kieu)) tinh - thanh ((trung chan) OR (trong chan)) thuong cong tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) or (thi kieu)) tinh - thanh ((trung chan) OR (trong chan)) thuong cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (thi kieu)) tinh - thanh ((trung chan) OR (trong chan)) thuong cong tac toan tap*.