Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
manh thang » danh thang, minh thang, nhanh thang
thang moi » thanh moi, thang loi, thanh loi
duc manh » suc manh, duc anh, duc minh
moi cua » hoi cua, doi cua, moi quan
ve cac » va cac, vien cac
cua tu » cua tuc, cua su, cua cu
y nang » ky nang, ly nang, v nang
ve cam » ve cham, va cam, ve cai
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y nang ((ma hoi) or (xa hoi)). hieu ((ve cam) OR (ve cac)) duc manh thang moi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang ((ma hoi) OR (xa hoi)). hieu ((ve cam) OR (ve cac)) duc manh thang moi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang ((ma hoi) or (xa hoi)). hieu ((ve cam) OR (ve cac)) duc manh thang moi cua tu".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang ((ma hoi) or (xa hoi)). hieu ((ve cam) OR (ve cac)) duc manh thang moi cua tu*.