Perhaps you should try some spelling variations:
thuong trong » thong trong, duong trong, thuoc trong
thanh trung » thanh tung
trong ban » trong san, trong tan, trong quan
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
trung va » truong va, trang va, trung ha
than cap » khan cap, thanh lap, thanh cac
toan ban » van ban

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 trung va thuong trong ban ((than cap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doc hieu)) sach - thanh trung va thuong trong ban ((than cap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doc hieu)) sach - thanh trung va thuong trong ban ((than cap) or (toan ban))*.