Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
van nhanh » van thanh, van hanh, van khanh
cau tren » cu tren, dau tren, ca tren
thai cau » thai cao, toan cau, thai van
luoc van » luoc can, luoc va, luc van
cac luoc » cac nuoc, cac cuoc, cac quoc
hieu ve » hieu va, hieu van
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ty hang
sach ty » sach y, sach tu, sach thu
ve cac » va cac, vien cac
c_ hai » co hai
_ hai » _ tai, _ hao
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 ty nang ((o hoi) or (((_ hai) or (c_ hai)))). hieu ve cac luoc van nhanh thai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((o hoi) OR (((_ hai) OR (c_ hai)))). hieu ve cac luoc van nhanh thai cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((o hoi) or (((_ hai) or (c_ hai)))). hieu ve cac luoc van nhanh thai cau tren*.