Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » canh tranh, hanh chinh
viet hung » viet huong, viet trung
trong tac » trong cac, tuong tac, trong tan
ho chieu » theo chieu, hoc thieu, mot chieu
va dung » van dung, va duong, vat dung
tac van » tac vang, cac van, tac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - hanh trinh ((va dung) or (viet hung)) trong tac van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh trinh ((va dung) OR (viet hung)) trong tac van ban*.