Perhaps you should try some spelling variations:
ca tren » cau tren, cu tren, la tren
danh vi » hanh vi, dinh vi, danh di
qua hai » qua hoat
can ky » van ky, dan ky, ban ky
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, ma hoa, me hoi
su can » su van, su cao, tu can
vi ca » vit ca, li ca, va ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: su can ky nang ((ma hoi) OR (xa hoi)). hieu qua hai ((xuc va) or (tuc va)) danh vi ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su can ky nang ((ma hoi) OR (xa hoi)). hieu qua hai ((xuc va) OR (tuc va)) danh vi ca tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su can ky nang ((ma hoi) OR (xa hoi)). hieu qua hai ((xuc va) or (tuc va)) danh vi ca tren".
• Adding a wildcard symbol may retrieve word variants: su can ky nang ((ma hoi) OR (xa hoi)). hieu qua hai ((xuc va) or (tuc va)) danh vi ca tren*.