Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hanh dinh » thanh dinh, hinh dinh, hanh tinh
vat nhung » va nhung, vap nhung, vai nhung
dinh vat » sinh vat, dinh van, dinh dat
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) or (chieu sach)) - hanh dinh vat nhung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu sach)) - hanh dinh vat nhung cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (chieu sach)) - hanh dinh vat nhung cong tac toan tap*.