Perhaps you should try some spelling variations:
cam truc » cau truc, nam truc, lam truoc
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
va dinh » van dinh, va kinh, va tinh
cuu tre » cua tre, cau tren, cau treo
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
va cam » va cham, va cac, va cao
va dan » ca dan, va dao, va dau
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang cao hoi. hieu va cam truc ((va dan) or (va dinh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang cao hoi. hieu va cam truc ((va dan) OR (va dinh)) vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang cao hoi. hieu va cam truc ((va dan) or (va dinh)) vi cuu tre*.