Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
cong danh » cuong danh, cong dan, cong thanh
danh toan » manh toan, anh toan, dan toan
ho chieu » theo chieu, doi chieu, mot chieu
tinh cua » trinh cua, sinh cua, tinh chat
dinh cuu » dinh chi
toan ban » van ban

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: ((ho chieu) OR (hoc thieu)) xanh - thanh ((tinh cua) OR (dinh cuu)) dung cong danh toan ban~.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - thanh ((tinh cua) or (dinh cuu)) dung cong danh toan ban*.