Perhaps you should try some spelling variations:
chay tren » thai tren, ca tren, cau tren
dinh lam » dinh van, tinh lao
chau tre » chau tho, cho tre, cau tra
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
tuc van » thuc van, truc van, duc van
va cam » va cham, va cac, va cao
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: tu sach ky nang xa hoi. lieu va cam ((tuc van) OR (tuc va)) dinh lam ((chau tre) or (chay tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. lieu va cam ((tuc van) OR (tuc va)) dinh lam ((chau tre) OR (chay tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. lieu va cam ((tuc van) OR (tuc va)) dinh lam ((chau tre) or (chay tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. lieu va cam ((tuc van) OR (tuc va)) dinh lam ((chau tre) or (chay tren))*.