Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
cua nhung » va nhung
cong canh » cong danh, cong thanh, cong khanh
cua hang » cua dang, cua cong, cua ban
canh van » anh van, can van, cach van

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)) - nhanh tinh ((cua hang) or (cua nhung)) cong canh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - nhanh tinh ((cua hang) OR (cua nhung)) cong canh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) OR (thien hach)) - nhanh tinh ((cua hang) or (cua nhung)) cong canh van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) OR (thien hach)) - nhanh tinh ((cua hang) or (cua nhung)) cong canh van ban*.