Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
xuan thong » xuat thong, xuan thang, xuan truong
chao chu » cho chu, cua chu, cao cho
hanh van » thanh van, khanh van, hanh va
van xuan » van quan, van tuan, van xuat
cong dan » cong san, cong tan, huong dan
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((chao chu) or (theo tieu)) sach - hanh van xuan thong cong dan ((chan cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((chao chu) OR (theo tieu)) sach - hanh van xuan thong cong dan ((chan cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((chao chu) or (theo tieu)) sach - hanh van xuan thong cong dan ((chan cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: ((chao chu) or (theo tieu)) sach - hanh van xuan thong cong dan ((chan cau) OR (phan cau))*.