Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
tai cua » thai cua, tai cuc, tri cua
ve cam » ve cham, ve cac, va cam
cua te » cua tu
o hai » co hai, so hai, o lai
o lao » o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang ((o hai) or (o lao)). hieu ve cam ((xuc van) or (duc anh)) hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang ((o hai) OR (o lao)). hieu ve cam ((xuc van) OR (duc anh)) hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang ((o hai) or (o lao)). hieu ve cam ((xuc van) or (duc anh)) hanh tai cua te*.