Perhaps you should try some spelling variations:
vinh cuu » dinh cuu, sinh cua, dinh cu
dang xay » dang van, van xay
tham soc » cham soc, tham nuoc, thai son
te sach » toc sach
va hanh » van hanh, va thanh, va danh
hieu va » hieu qua
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
soc va » hoc va, loc va, doc va
vi cuu » 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: te sach ky dang xay hoi. ((lieu va) or (hieu va)) tham soc va hanh ((vi cuu) OR (vinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xay hoi. ((lieu va) OR (hieu va)) tham soc va hanh ((vi cuu) OR (vinh cuu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xay hoi. ((lieu va) or (hieu va)) tham soc va hanh ((vi cuu) OR (vinh cuu)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xay hoi. ((lieu va) or (hieu va)) tham soc va hanh ((vi cuu) OR (vinh cuu)) tre*.