Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
hanh nhan » thanh nhan, danh nhan, anh nhan
dung cong » dung trong
cong van » cong vang, cong san, song van
than cua » nhan cua, thai cua, gian cua
nhan va » nhan tai, nhan dan, nhan tao
va dung » van dung, va duong, vat dung
ban cua » ban quan

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: hoc ((thieu xanh) OR (thien anh)) - hanh nhan va dung cong van ((than cua) OR (ban cua))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - hanh nhan va dung cong van ((than cua) OR (ban cua))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - hanh nhan va dung cong van ((than cua) OR (ban cua))*.