Perhaps you should try some spelling variations:
nganh xay » nganh mac, nganh y, nganh ma
va thanh » gia thanh, ban thanh, le thanh
nang xay » dang xay, nang xuan, nang cao
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
hai cua » thai cua, dai cua, hoi cua
va tinh » may tinh
van lam » van nam
lam xuc » cam xuc, lam duoc
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((nang xay) OR (nganh xay)) hoi. hieu van lam xuc ((va thanh) or (va tinh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang xay) OR (nganh xay)) hoi. hieu van lam xuc ((va thanh) OR (va tinh)) hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((nang xay) OR (nganh xay)) hoi. hieu van lam xuc ((va thanh) or (va tinh)) hai cua tre*".