Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh sinh » hanh tinh, hanh dinh, hinh sinh
vat nhung » va nhung, vap nhung, vai nhung
hoc phap » hoc phan, hoc phat, hoc pho
hoi nhap » hoi dap, moi nhat
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((ho hap) OR (hoc phap))) OR (hoi nhap)) tinh - hanh sinh vat nhung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((ho hap) OR (hoc phap))) or (hoi nhap)) tinh - hanh sinh vat nhung cong tac toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((((ho hap) OR (hoc phap))) or (hoi nhap)) tinh - hanh sinh vat nhung cong tac toan cau*.