Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
tuong cua » truong cua, thong cua, luong cua
huong cua » dung cua
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doc hieu)) sach - thanh ((tuong cua) or (huong cua)) thong cong dan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doc hieu)) sach - thanh ((tuong cua) OR (huong cua)) thong cong dan can cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doc hieu)) sach - thanh ((tuong cua) or (huong cua)) thong cong dan can cau*.