Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cao hoc » co hoc, cho hoc, chat hoc
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
su tien » su kien, su hien, tu tieng
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: tu sach ty nang cao hoc. hieu va ((nam thuc) or (cam xuc)) va hanh vi su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang cao hoc. hieu va ((nam thuc) OR (cam xuc)) va hanh vi su tien.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang cao hoc. hieu va ((nam thuc) or (cam xuc)) va hanh vi su tien*.