Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
tinh bai » tinh bac, tinh hai, hinh bai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, dua tren
luc va » duc va, tuc va
loc va » hoc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang xa hoi. hieu va cham ((luc va) OR (loc va)) tinh bai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. hieu va cham ((luc va) OR (loc va)) tinh bai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang xa hoi. hieu va cham ((luc va) OR (loc va)) tinh bai ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. hieu va cham ((luc va) OR (loc va)) tinh bai ((cua tre) or (cua triet))*.