Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
dinh cuu » dinh chi
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
va tinh » may tinh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va nha » va nho, ve nha
vi cuu » vi luu, vinh cuu
nuoc » quoc, duoc, ngoc

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 xa hoi. hieu va nha nuoc ((va thanh) OR (va tinh)) ((vi cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang xa hoi. hieu va nha nuoc ((va thanh) OR (va tinh)) ((vi cuu) OR (dinh cuu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky tang xa hoi. hieu va nha nuoc ((va thanh) OR (va tinh)) ((vi cuu) or (dinh cuu)) tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. hieu va nha nuoc ((va thanh) OR (va tinh)) ((vi cuu) or (dinh cuu)) tre*.