Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va giao » van giao, va giai, va gia
va tinh » may tinh
doi cua » dai cua, hoi cua
cu dan » cua dan, ca dan, co dan
dan ky » van ky
vi cua » vai cua, di cua

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: cu dan ky nang xa hoi. hieu va giao duc va tinh ((vi cua) OR (doi cua)) te~.
• Adding a wildcard symbol may retrieve word variants: cu dan ky nang xa hoi. hieu va giao duc va tinh ((vi cua) or (doi cua)) te*.