Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
va danh » va dinh, va hanh, dia danh
hai cua » thai cua, dai cua, hoi cua
va dan » ca dan, va dao, va dau
cua te » cua tu
bach » sach, cach, bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ly nang xa hoi. ((hieu va) or (lieu va)) cac nuoc ((va danh) or (va dan)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ly nang xa hoi. ((hieu va) OR (lieu va)) cac nuoc ((va danh) OR (va dan)) hai cua te.
• Adding a wildcard symbol may retrieve word variants: vu bach ly nang xa hoi. ((hieu va) or (lieu va)) cac nuoc ((va danh) or (va dan)) hai cua te*.