Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
cua viet » ca viet, hoa viet, cua vat
thi hang » thi hanh, thi hong, thi thanh
thai cua » than cua, tai cuc, tri cua
thi nang » thi cong, ki nang, thi hanh
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
te sach » toc sach
ca hoi » cau hoi, cua hoi, xa hoi
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((thi hang) or (thi nang)) ca hoi. hieu ((va cao) or (va cham)) thuc va hanh thai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thi hang) OR (thi nang)) ca hoi. hieu ((va cao) OR (va cham)) thuc va hanh thai cua viet.
• Adding a wildcard symbol may retrieve word variants: te sach ((thi hang) or (thi nang)) ca hoi. hieu ((va cao) or (va cham)) thuc va hanh thai cua viet*.