Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » hieu qua
cau luc » cau truc, cau phuc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
vi su » va su, ve su, ki su

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 xa hoi. ((((hieu ve) or (hieu va))) or (lieu va)) cau luc va danh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang xa hoi. ((((hieu ve) OR (hieu va))) OR (lieu va)) cau luc va danh vi su triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang xa hoi. ((((hieu ve) or (hieu va))) or (lieu va)) cau luc va danh vi su triet*.