Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, su sach, te sach
va danh » va dinh, va dan, va hanh
hoi cua » hoi chuc
sai cua » dai cua, hai cua, lai cua
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
hieu he » hieu ve, hiem he, hieu le
nang ma » tang ma, sang ma, nang cao
he nam » ha nam, nghe nam
ma hoi » mai hoi, xa hoi, ma hoa

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 ky nang ma hoi. hieu he nam thuc va danh ((sai cua) or (((thai cua) or (hoi cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu he nam thuc va danh ((sai cua) OR (((thai cua) OR (hoi cua)))) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu he nam thuc va danh ((sai cua) or (((thai cua) or (hoi cua)))) tre*.