Perhaps you should try some spelling variations:
lang than » lang thang, lang thanh, sang than
thuat van » thuat san, thuat va, thuat ban
hieu van » thien van, hieu ve
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
than cua » nhan cua, thai cua, ban cua
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
va lang » va nang, hoa lang
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thuat van ky nang xa hoi. ((((hieu van) OR (lieu va))) OR (hieu va)) cac nuoc va lang than cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat van ky nang xa hoi. ((((hieu van) OR (lieu va))) or (hieu va)) cac nuoc va lang than cua te~".
• Adding a wildcard symbol may retrieve word variants: thuat van ky nang xa hoi. ((((hieu van) OR (lieu va))) or (hieu va)) cac nuoc va lang than cua te*.