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
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
luc va » tuc va, loc va

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. lieu va cam ((luc va) OR (duc va)) hanh tri cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. lieu va cam ((luc va) OR (duc va)) hanh tri cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. lieu va cam ((luc va) OR (duc va)) hanh tri cua tre*.