Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
chinh phu » tinh phu, chinh cho
dong cong » duong cong, dung cong, dang cong
phu dong » phuc dong, pho dong, chu dong
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 chinh phu dong cong so cham van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu sang)) - hanh chinh phu dong cong so cham van.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu sang)) - hanh chinh phu dong cong so cham van*.