Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
trong tac » trong cac, tuong tac, trong tan
hanh tam » thanh tam, nhanh tam, hanh tram
va dung » van dung, va duong, vat dung
tac van » tac vang, cac van, tac va
tam va » tam van, nam va, tm 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 ((hieu lang) OR (chieu sang)) - hanh tam va dung trong tac van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (chieu sang)) - hanh tam va dung trong tac van ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (chieu sang)) - hanh tam va dung trong tac van ban*.