Perhaps you should try some spelling variations:
thanh vua » thanh qua, thanh xuan, thanh tuan
thanh va » thanh van, hanh va, thanh ha
su sach » so sach, vu sach
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
ly nang » ky nang, ly hang, ly vang
chua te » cua te, chua tu, chua xe
y nang » ky nang, v nang, may nang
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y nang) or (ly nang)) xa hoi. hieu vu cham soc va ((thanh vua) OR (thanh va)) chua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ly nang)) xa hoi. hieu vu cham soc va ((thanh vua) OR (thanh va)) chua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) or (ly nang)) xa hoi. hieu vu cham soc va ((thanh vua) OR (thanh va)) chua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (ly nang)) xa hoi. hieu vu cham soc va ((thanh vua) OR (thanh va)) chua te*.