Perhaps you should try some spelling variations:
dang tay » dang xay, dung tay, dan tay
hieu van » hieu va, thien van, lieu va
ky dang » ky nang, ky danh
tay hoi » tay ho, tao hoi, tay thai
nam xuc » cam xuc, nam xua, nam thuc
va dinh » van dinh, va kinh, va tinh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va
va cau » van cau, va cac, va cao
va dau » va dao

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 dang tay hoi. hieu van nam xuc va dinh ((va cau) or (va dau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang tay hoi. hieu van nam xuc va dinh ((va cau) OR (va dau)) tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky dang tay hoi. hieu van nam xuc va dinh ((va cau) or (va dau)) tre*.