Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
tri cuu » tri cua, tra cuu, trinh cuu
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
va cam » va cham, va cac, va cao
loc va » luc va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. hieu va cam ((tuc va) or (((loc va) or (hoc va)))) hanh tri cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu va cam ((tuc va) OR (((loc va) OR (hoc va)))) hanh tri cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu va cam ((tuc va) or (((loc va) or (hoc va)))) hanh tri cuu tre*.