Perhaps you should try some spelling variations:
dau nuoc » dat nuoc, dau ngoc, cap nuoc
nuoc van » nuoc va, nuoc san, luoc van
van hanh » van thanh, ban hanh, van anh
so sanh » do sanh
hieu va » lieu va, hieu qua
sanh y » sinh y, anh y, hanh y
y nang » ky nang, ly nang, v nang
va dau » va dao
vi cua » vai cua
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh y nang x hoi. hieu va dau nuoc van hanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y nang x hoi. hieu va dau nuoc van hanh ((vi cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: so sanh y nang x hoi. hieu va dau nuoc van hanh ((vi cua) or (di cua)) tre*.