Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong cong » trong cong, tong cong, thong thong
mot chieu » doi chieu, ho chieu
trung vap » trung cap, trung va, trung van
vap thong » va thong, van thong, phap thong
cong dan » cong san, cong tan, huong dan
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chi)) sach - thanh trung vap thong cong dan ((than cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chi)) sach - thanh trung vap thong cong dan ((than cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (doi chi)) sach - thanh trung vap thong cong dan ((than cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chi)) sach - thanh trung vap thong cong dan ((than cau) OR (phan cau))*.