Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat doc » chat hoc, chau doc, thuat doc
danh cau » danh dau, danh ca, danh hau
su triet » su viet, su tien, ve triet
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
doc va » duoc va, hoc va, duc va
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: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu van chat doc va danh cau su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang xa hoi. hieu van chat doc va danh cau su triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu van chat doc va danh cau su triet*.