Perhaps you should try some spelling variations:
cong thang » cong thanh, cang thang, cong thong
chieu xanh » chieu sach, chieu sang, chieu tinh
toan thuc » toan hoc, dan thuc, nhan thuc
thuc dung » thuoc dung, thuy dung, tuc dung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - tinh toan thuc dung cong thang ((phan lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - tinh toan thuc dung cong thang ((phan lap) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - tinh toan thuc dung cong thang ((phan lap) or (phan dau))*.