Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v nang
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang mai hoi. hieu ((ve cai) or (va cam)) tuc va hanh di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang mai hoi. hieu ((ve cai) OR (va cam)) tuc va hanh di cua vat*.