Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
toc sach » hoc sach, doc sach, thuoc sach
nang tai » hang tai, tang tai, sang tai
hai cuu » hai cua, hai chu, hai cuc
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
tai hoi » tai khoi, dai hoi, tai hai
cac tu » cac thu, cach tu, cac du
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) y nang tai hoi. hieu ve cac tu ((va thanh) OR (va tinh)) hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y nang tai hoi. hieu ve cac tu ((va thanh) OR (va tinh)) hai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) y nang tai hoi. hieu ve cac tu ((va thanh) OR (va tinh)) hai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) y nang tai hoi. hieu ve cac tu ((va thanh) OR (va tinh)) hai cuu tre*.