Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
danh dau » lanh dao, hang dau, danh tu
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
y nang » ky nang, ly nang, v nang
ve cac » vien cac
xuc va » duc va, tuc va, luc 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: hoc sach y nang xa hoi. hieu ((ve cac) OR (va cac)) xuc va danh dau su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y nang xa hoi. hieu ((ve cac) OR (va cac)) xuc va danh dau su triet".
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang xa hoi. hieu ((ve cac) OR (va cac)) xuc va danh dau su triet*.