Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
hieu va » lieu va, hieu qua
tri cuu » tri cua, tra cuu, trinh cuu
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
cuu tre » cua tre, cau tren, cau treo
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
ha hoi » hoa hoi, ha noi, xa hoi
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
te san » te ban, ke san, tu san
te sac » te sach, te cac

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) or (te san)) ky lang ha hoi. hieu va cam tuc va hanh tri cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te san)) ky lang ha hoi. hieu va cam tuc va hanh tri cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te san)) ky lang ha hoi. hieu va cam tuc va hanh tri cuu tre*.