Perhaps you should try some spelling variations:
thuoc dieu » thuc dieu, hoc dieu, thuat dieu
luong cong » dung cong, trong cong, cong cong
theo dieu » theo tieu, theo chieu, he dieu
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
toan cao » toan ban, toan tap
ty toan » ly toan, tap toan, huy toan

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: ((theo dieu) OR (thuoc dieu)) hanh - hanh ((trinh va) OR (trinh van)) luong cong ty toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo dieu) or (thuoc dieu)) hanh - hanh ((trinh va) OR (trinh van)) luong cong ty toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((theo dieu) or (thuoc dieu)) hanh - hanh ((trinh va) OR (trinh van)) luong cong ty toan cao*.