Perhaps you should try some spelling variations:
thien van » thi van
van tham » van thanh, van tuan, van chat
dinh cuu » dinh chi
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
vi cuu » vi luu, vinh cuu
tu san » thu san, tu ban, tu can
loc va » hoc va, luc va
san ky » sang ky, van ky, dan ky
soc va » hoc va, doc va, goc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky tang xa hoi. thien van tham ((soc va) or (loc va)) hanh ((vi cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang xa hoi. thien van tham ((soc va) OR (loc va)) hanh ((vi cuu) OR (dinh cuu)) tre.
• Adding a wildcard symbol may retrieve word variants: tu san ky tang xa hoi. thien van tham ((soc va) or (loc va)) hanh ((vi cuu) or (dinh cuu)) tre*.