Perhaps you should try some spelling variations:
dat khanh » van khanh, duy khanh
xa khanh » xa thanh, van khanh, hoa khanh
tang mai » tang ma, tang tai, lang mai
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
xa hanh » xa thanh, va hanh, da hanh
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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 mai hoi. hieu van cam tuc ((xa hanh) or (((xa khanh) OR (dat khanh)))) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang mai hoi. hieu van cam tuc ((xa hanh) OR (((xa khanh) OR (dat khanh)))) vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky tang mai hoi. hieu van cam tuc ((xa hanh) or (((xa khanh) OR (dat khanh)))) vai cua tre*".