Perhaps you should try some spelling variations:
phuong dan » phuong danh, phuong doan, huong dan
trung van » truong van, trong van, trung tuan
chao chu » cho chu, cua chu, cao cho
chu sach » cau sach, thu sach, chieu sach
trung va » truong va, trang va, trung ha
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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 sach - thanh ((trung van) or (trung va)) bang phuong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu sach - thanh ((trung van) OR (trung va)) bang phuong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: chao chu sach - thanh ((trung van) or (trung va)) bang phuong dan chan cau*.