Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
thuong con » thuong dong, truong cong, thong cong
con thang » cong thang, con than, cong thanh
thanh cha » thanh ha, thanh nha, thanh phan
thanh ca » thanh cac, thanh ha, thanh va
cong va » dong va, cong ha, cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) OR (thien hach)) - thanh cong va thuong con thang ((thanh ca) or (thanh cha))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - thanh cong va thuong con thang ((thanh ca) OR (thanh cha)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) OR (thien hach)) - thanh cong va thuong con thang ((thanh ca) or (thanh cha))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) OR (thien hach)) - thanh cong va thuong con thang ((thanh ca) or (thanh cha))*.