Perhaps you should try some spelling variations:
chat soc » cham soc, chat hoc, chat doc
dinh cuu » dinh chi
ky tang » ky dang, kho tang, ky trong
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
va hanh » van hanh, va thanh, va danh
te sac » te sach, te cac, te san
soc va » hoc va, loc va, doc va
vi cuu » vi luu, vinh cuu

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

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