Perhaps you should try some spelling variations:
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
dien anh » tieng anh, dien dan
luan han » luan hoan, luan phan, luan van
han nong » hang nong, han tong, phan cong
nong tac » cong tac, dong tac, nong tan
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((dien anh) or (dieu hanh)) - hanh tang luan han nong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dien anh) OR (dieu hanh)) - hanh tang luan han nong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((dien anh) or (dieu hanh)) - hanh tang luan han nong tac toan ban*.