Perhaps you should try some spelling variations:
dinh chi » dinh thi, dinh tri, dinh moi
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
vi cuu » vi luu, vinh cuu
ke dan » le dan
loc va » hoc va, luc va
dan ky » van 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: ke dan ky tang xa hoi. hieu va tham ((soc va) or (loc va)) hanh ((vi cuu) or (dinh chi)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ke dan ky tang xa hoi. hieu va tham ((soc va) OR (loc va)) hanh ((vi cuu) OR (dinh chi)) tre.
• Adding a wildcard symbol may retrieve word variants: ke dan ky tang xa hoi. hieu va tham ((soc va) or (loc va)) hanh ((vi cuu) or (dinh chi)) tre*.