Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
phuc dang » phuc dong, phuc hang, thuoc dang
dang cong » dung cong
hanh han » hanh nhan, hanh phan, hanh san
han phuc » hanh phuc, van phuc, ban phuc
cham van » pham van, cham va, chao van
cong so » cong san, cong hoa
so cham » so kham, co cham, so chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (chieu sang)) - hanh han phuc dang cong so cham van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu sang)) - hanh han phuc dang cong so cham van.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu sang)) - hanh han phuc dang cong so cham van*.