Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chuc danh » chuc nganh, thuc hanh, chuc nang
hanh tang » hanh trang, hanh mang, hanh tung
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
anh tang » anh bang, anh dang, anh nang
toan tap » toan ban
va dung » van dung, va duong, vat dung

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: theo ((chuc danh) OR (chieu xanh)) - ((hanh tang) OR (anh tang)) va dung cong tinh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chieu xanh)) - ((hanh tang) OR (anh tang)) va dung cong tinh toan tap~".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chieu xanh)) - ((hanh tang) OR (anh tang)) va dung cong tinh toan tap*.