Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
ban anh » ban hanh, ban banh, ban danh
soc ban » hoc ban, coc ban, so ban
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cai ky » cao ky, cac ky, cam ky
anh vi » hanh vi, anh va, anh ve
vi cuu » vi luu, vinh cuu
tu cai » tu cac, tu can, tu bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cai ky ((nang xa) OR (nang ma)) hoi. ((hieu van) or (thien van)) cham soc ban anh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky ((nang xa) OR (nang ma)) hoi. ((hieu van) OR (thien van)) cham soc ban anh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ky ((nang xa) OR (nang ma)) hoi. ((hieu van) or (thien van)) cham soc ban anh vi cuu tre*".