Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh tri » thanh tra, thanh tai, chinh tri
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
va cham » va chat, va tham
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang
tri su » tri du, tai su, trinh su
lo va » lo van, lao va, ly 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 ((y nang) or (v nang)) xa hoi. hieu ((va cham) or (va cac)) lo va thanh tri su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((y nang) OR (v nang)) xa hoi. hieu ((va cham) OR (va cac)) lo va thanh tri su triet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((y nang) or (v nang)) xa hoi. hieu ((va cham) or (va cac)) lo va thanh tri su triet*.