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, ban hanh
va danh » va dinh, dia danh, va thanh
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
va dan » ca dan, va dao, va dau

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 danh) OR (va dan)))) 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 danh) OR (va dan)))) tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky nang xa hoi. hieu va cam duc ((va hanh) or (((va danh) OR (va dan)))) 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 danh) OR (va dan)))) tai cuc tre*.