Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
toc sach » hoc sach, doc sach, nuoc sach
danh cau » danh dau, danh ca, danh hau
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
va danh » va dinh, va dan, va hanh
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
cau su » cao su, cau tu, cuu su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (thuoc sach)) y nang xa hoi. hieu ve cac duc va danh cau su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (thuoc sach)) y nang xa hoi. hieu ve cac duc va danh cau su tien".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (thuoc sach)) y nang xa hoi. hieu ve cac duc va danh cau su tien*.