Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
thieu sach » chieu sach, thien hach, theo sach
cong thanh » dong thanh, cong trinh, cong tan
hieu cach » hieu cac, chieu sach, hieu ca
thanh can » thanh san, thanh van, thanh tan
cua dang » cua ban
can cau » van cau, ban cau, ca cau

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 (hieu cach)) - nhanh thang ((cua dang) OR (cua cong)) cong thanh can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu cach)) - nhanh thang ((cua dang) OR (cua cong)) cong thanh can cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (hieu cach)) - nhanh thang ((cua dang) OR (cua cong)) cong thanh can cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hieu cach)) - nhanh thang ((cua dang) OR (cua cong)) cong thanh can cau*.