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
hanh dai » hanh tai, hanh dao, vanh dai
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sac ky » sai ky
cua tu » cua tuc, cua su, cua cu

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

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