Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
lang hoa » hang hoa, lang ha, nang hoa
ky lang » ky nang, ky dang, ky tang
hoa hoi » khoa hoi, hoa hoc, hoa doi
thai do » thay doi, thai den
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
te cac » tu cac, ve cac, te cao
vi cuu » vi luu, vinh cuu
do va » do van, so va

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: te cac ky lang hoa hoi. ((hieu quan) OR (hieu qua)) thai do va hanh vi cuu tre~.
• Adding a wildcard symbol may retrieve word variants: te cac ky lang hoa hoi. ((hieu quan) or (hieu qua)) thai do va hanh vi cuu tre*.