Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
thanh ve » hanh ve, thanh va, thanh van
hoc cac » hoc cao
dang xa » dang xay, lang xa, dang ha
hieu va » hieu qua
so dang » su dang, so dan, so dung
cac so » cac co, cac bo, cac ho
soc va » hoc va, loc va, doc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cac so dang xa hoi. ((hieu va) or (lieu va)) cham soc va ((thanh ve) or (thanh vien)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac so dang xa hoi. ((hieu va) OR (lieu va)) cham soc va ((thanh ve) OR (thanh vien)) cua te.
• Adding a wildcard symbol may retrieve word variants: hoc cac so dang xa hoi. ((hieu va) or (lieu va)) cham soc va ((thanh ve) or (thanh vien)) cua te*.