Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
tai khoi » tai khoa, mai khoi, tao khoi
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
tai hai » thi hai, dai hai, tai ha
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cau luc » cau truc, cau phuc
ve cau » ke cau, va cau, ve cac
luc va » duc va, tuc va, loc va
cua te » cua tu

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 ((tai hai) or (tai khoi)). hieu ve cau luc va thanh hai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang ((tai hai) OR (tai khoi)). hieu ve cau luc va thanh hai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang ((tai hai) or (tai khoi)). hieu ve cau luc va thanh hai ((cua tre) or (cua te))*.