Perhaps you should try some spelling variations:
thong cong » trong cong, thong thong, phong chong
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tong cong » trong cong, cong cong, dung cong
lan hanh » ban hanh, van hanh, lan anh
hanh cua » manh cua, hang cua, hanh sua

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: hoc chieu xanh - lan hanh cua ((thong cong) OR (tong cong)) ((tinh toan) OR (anh tuan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - lan hanh cua ((thong cong) OR (tong cong)) ((tinh toan) or (anh tuan)) tap~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - lan hanh cua ((thong cong) OR (tong cong)) ((tinh toan) or (anh tuan)) tap*.