Perhaps you should try some spelling variations:
tung dan » dung dan, huong dan, trung dai
hanh tai » thanh tai, hang tai, han tai
duc manh » suc manh, duc anh, duc minh
ky tung » ky tang, ky vung, ky thuong
dan hoi » dan hoc, dai hoi, van hoi
hieu va » hieu qua
tai cua » thai cua, tai cuc, tri cua
vuc van » duc van, luc van, thuc van
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky tung dan hoi. ((hieu va) OR (lieu va)) chat ((vuc van) OR (duc manh)) hanh tai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky tung dan hoi. ((hieu va) OR (lieu va)) chat ((vuc van) or (duc manh)) hanh tai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky tung dan hoi. ((hieu va) OR (lieu va)) chat ((vuc van) or (duc manh)) hanh tai cua te*.