Perhaps you should try some spelling variations:
nang doc » nang luc
thuc dan » thuc hanh, hoc dan, thuc vat
danh vai » danh sai, danh va, doanh van
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
doc loi » duc loi
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc day
vai cua » dai cua, hai cua, lai cua
va am » va lam, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang doc loi. hieu va am ((thuc va) OR (thuc dan)) danh vai cua viet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang doc loi. hieu va am ((thuc va) or (thuc dan)) danh vai cua viet*.