Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
toan thuc » toan hoc, dan thuc, nhan thuc
hung cong » hung cuong, phung cong, dung cong
toan phan » thanh phan, toan ban, hoa phan
ho chieu » theo chieu, mot chieu, doi chieu
phan cac » nhan cach, phan dau, phan lap

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) OR (hoc thieu)) xanh - tinh toan thuc ((hung cong) or (nhung cong)) toan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - tinh toan thuc ((hung cong) OR (nhung cong)) toan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - tinh toan thuc ((hung cong) or (nhung cong)) toan phan cac".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - tinh toan thuc ((hung cong) or (nhung cong)) toan phan cac*.