Perhaps you should try some spelling variations:
thien van » thi van
va thanh » gia thanh, ban thanh, le thanh
cau tra » ca tra, cau ra, cau truc
va tinh » may tinh
cam luc » cam xuc, cau luc
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
can ky » van ky, dan ky, ban ky
di cau » da cau, diem cau
tu can » tu ban, tu cac, thu canh

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu can ky dang xa hoi. ((thien van) or (hieu va)) cam luc ((va thanh) OR (va tinh)) di cau tra~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky dang xa hoi. ((thien van) OR (hieu va)) cam luc ((va thanh) OR (va tinh)) di cau tra.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu can ky dang xa hoi. ((thien van) or (hieu va)) cam luc ((va thanh) OR (va tinh)) di cau tra".
• Adding a wildcard symbol may retrieve word variants: tu can ky dang xa hoi. ((thien van) or (hieu va)) cam luc ((va thanh) OR (va tinh)) di cau tra*.