Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cua viet » ca viet, hoa viet, cua dieu
sach ty » sach y, sach tu, sach thu
mang xa » lang xa, mang may, dang xay
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((mang xa) or (nang x)) hoi. hieu van cam duc va hanh thai ((cua viet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((mang xa) OR (nang x)) hoi. hieu van cam duc va hanh thai ((cua viet) OR (cua vat)).
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((mang xa) or (nang x)) hoi. hieu van cam duc va hanh thai ((cua viet) or (cua vat))*.