Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
tranh cua » manh cua
doanh cua » doanh luan
chinh cau » chinh chau, chinh ca, chinh can
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, can cau, nhanh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - canh ((tranh cua) or (doanh cua)) thong cong dan ((chan cau) or (chinh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - canh ((tranh cua) OR (doanh cua)) thong cong dan ((chan cau) OR (chinh cau)).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - canh ((tranh cua) or (doanh cua)) thong cong dan ((chan cau) or (chinh cau))*.