Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
va thanh » gia thanh, ban thanh, le thanh
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hai cua » thai cua, dai cua, hoi cua
lam xuc » cam xuc
va tinh » may tinh
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky lang ha hoi. hieu van ((lam xuc) OR (lam duoc)) ((va thanh) or (va tinh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky lang ha hoi. hieu van ((lam xuc) OR (lam duoc)) ((va thanh) OR (va tinh)) hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky lang ha hoi. hieu van ((lam xuc) OR (lam duoc)) ((va thanh) or (va tinh)) hai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky lang ha hoi. hieu van ((lam xuc) OR (lam duoc)) ((va thanh) or (va tinh)) hai cua tre*.