Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
va dinh » van dinh, va kinh, va tinh
cuc tre » duc tre, cua tre, cuu tre
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
va cam » va cham, va cac, va cao

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 xa hoi. hieu va cam duc ((va hanh) or (va dinh)) tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang xa hoi. hieu va cam duc ((va hanh) OR (va dinh)) tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang xa hoi. hieu va cam duc ((va hanh) or (va dinh)) tai cuc tre*.