Perhaps you should try some spelling variations:
lang dong » lang trong, lao dong, cong dong
thuat san » thuat toan, thuat song, thuat lanh
dong qua » duong qua, dong cua, dong mua
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
san ky » sang ky, van ky, dan ky
loc va » luc va
x hoi » xa hoi, o hoi, 5 hoi

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 san ky nang ((x hoi) OR (x ho)). hieu ve cham ((loc va) OR (hoc va)) lang dong qua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ky nang ((x hoi) or (x ho)). hieu ve cham ((loc va) OR (hoc va)) lang dong qua su~".
• Adding a wildcard symbol may retrieve word variants: thuat san ky nang ((x hoi) or (x ho)). hieu ve cham ((loc va) OR (hoc va)) lang dong qua su*.