Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
danh dau » lanh dao, hang dau, danh tu
van chat » cao chat
ty hang » ly hang, ty xang, thi hang
van hau » van ha, van hai, van dau
va danh » va dinh, va dan, va hanh
ty nang » ky nang, ty xang, ly nang
tu sach » thu sach, su sach, te sach
co loi » co hoi
luc va » duc va, tuc va, loc va
dau su » dau tu, dan su, da 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 ((ty nang) OR (ty hang)) co loi. hieu ((van hau) or (van chat)) luc va danh dau su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty hang)) co loi. hieu ((van hau) OR (van chat)) luc va danh dau su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) OR (ty hang)) co loi. hieu ((van hau) or (van chat)) luc va danh dau su triet*".