Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc 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: ((te sach) or (hoc sach)) ky nang ma hoi. hieu van cau xuc va hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (hoc sach)) ky nang ma hoi. hieu van cau xuc va hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (hoc sach)) ky nang ma hoi. hieu van cau xuc va hanh vi su triet*.