Perhaps you should try some spelling variations:
thuc phung » thuc chung, thuc nhung, thu phuong
phung cong » nhung cong, phong cong, nhung chong
hoc chieu » hoc thieu, hoc hien, hoc dieu
toan thuc » toan hoc, dan thuc, nhan thuc
cong than » cong thanh, cong thang, cong tan
ho chieu » theo chieu, hoc thieu, mot chieu
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau

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) OR (ho chieu)) sang - tinh toan thuc phung cong than ((phan cac) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (ho chieu)) sang - tinh toan thuc phung cong than ((phan cac) OR (phan dau))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (ho chieu)) sang - tinh toan thuc phung cong than ((phan cac) OR (phan dau))*.