Perhaps you should try some spelling variations:
thai cuu » thai cua, tai cuc, thi cuc
anh thai » anh thi, anh tai, nhanh thai
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
dac van » cac van, dao van, dam van
cac dac » cac dan, cac dai, cac bac
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
y nang » ly nang, v nang, may nang
ve cac » va cac, vien cac
o lai » o lao
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((y nang) or (ky nang)) ((o hoi) or (o lai)). hieu ve cac dac van anh thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ky nang)) ((o hoi) OR (o lai)). hieu ve cac dac van anh thai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ky nang)) ((o hoi) or (o lai)). hieu ve cac dac van anh thai cuu tre*.