Perhaps you should try some spelling variations:
thien van » thi van
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
lua tru » luu tru, luan thu, luat tri
lap tu » lap du
lap ty » lap ly
vi lua » vi luu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((lap ty) OR (lap tu)) xang xa hoi. ((thien van) or (hieu va)) cam duc va danh vi lua tru~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((lap ty) OR (lap tu)) xang xa hoi. ((thien van) OR (hieu va)) cam duc va danh vi lua tru.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((lap ty) OR (lap tu)) xang xa hoi. ((thien van) or (hieu va)) cam duc va danh vi lua tru".
• Adding a wildcard symbol may retrieve word variants: thuat ((lap ty) OR (lap tu)) xang xa hoi. ((thien van) or (hieu va)) cam duc va danh vi lua tru*.