Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu sach » tu sach, thuat sach, thu hoach
danh dai » danh dau, danh sai, vanh dai
hieu cao » chieu cao, hieu cac, hieu ca
truc va » thuc va, thuc vat, trung va
danh di » danh du, xanh di, danh dien
cao cau » cao cap, co cau, tao cau
cuu tre » cua tre, cau tren, cau treo
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thuoc sach)) ky nang x hoi. hieu cao cau truc va ((danh dai) OR (danh di)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) ky nang x hoi. hieu cao cau truc va ((danh dai) OR (danh di)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuoc sach)) ky nang x hoi. hieu cao cau truc va ((danh dai) OR (danh di)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuoc sach)) ky nang x hoi. hieu cao cau truc va ((danh dai) OR (danh di)) cuu tre*.