Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
nuoc van » nuoc va, nuoc san, luoc van
van hanh » van thanh, ban hanh, van anh
lang xa » dang xay, lang van
lang ha » long ha
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
tu van » tu va
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu van ky ((lang xa) or (lang ha)) hoi. hieu va cac nuoc van hanh ((vi cua) or (vai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu van ky ((lang xa) OR (lang ha)) hoi. hieu va cac nuoc van hanh ((vi cua) OR (vai cua)) te.
• Adding a wildcard symbol may retrieve word variants: tu van ky ((lang xa) or (lang ha)) hoi. hieu va cac nuoc van hanh ((vi cua) or (vai cua)) te*.