Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va triet » va thiet, va trien, ve triet
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
va dinh » van dinh, va kinh, va tinh
dinh cu » dinh cuu, dinh chuc, dinh chau
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho
cu va » cuu va, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang x hoi. hieu ((ve cam) or (va cham)) duc va dinh cu va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang x hoi. hieu ((ve cam) OR (va cham)) duc va dinh cu va triet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang x hoi. hieu ((ve cam) or (va cham)) duc va dinh cu va triet*.