Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
hieu van » hieu va, thien van, hieu ve
va thanh » gia thanh, ban thanh, va tinh
than cua » nhan cua, thai cua, ban cua
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc 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 (v nang)) xa hoi. ((hieu van) or (lieu va)) bac xuc va thanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (v nang)) xa hoi. ((hieu van) OR (lieu va)) bac xuc va thanh than cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) OR (v nang)) xa hoi. ((hieu van) or (lieu va)) bac xuc va thanh than cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (v nang)) xa hoi. ((hieu van) or (lieu va)) bac xuc va thanh than cua tre*.