Perhaps you should try some spelling variations:
xay thanh » day thanh, giay thanh, ngay thanh
nam thuat » nam thuan, tam thuat, nam thu
thanh vai » thanh hai, thanh van, thanh tai
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky tang ma hoi. hieu van nam thuat xay thanh vai ((cuu tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang ma hoi. hieu van nam thuat xay thanh vai ((cuu tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang ma hoi. hieu van nam thuat xay thanh vai ((cuu tre) or (cua triet))*.