Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
lam duoc » nam duoc, luat duoc, lam thuoc
va thanh » gia thanh, ban thanh, va tinh
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
lam xuc » cam xuc
xac ky » cac ky, sac ky
bac ky » cac ky, ban ky, sac ky

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

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