Perhaps you should try some spelling variations:
chay tren » thai tren, ca tren, cau tren
hieu van » hieu va, thien van, lieu va
chau tre » chau tho, cho tre, cau tra
hanh lam » thanh lap, hanh kem, hanh va
ban hanh » ban hang
thu sach » tu sach, thuat sach, thuoc sach
sach ty » sach y, sach tu, sach thu
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang xa hoi. ((hieu ve) OR (hieu van)) cam xuc ban hanh lam ((chau tre) or (chay tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. ((hieu ve) OR (hieu van)) cam xuc ban hanh lam ((chau tre) OR (chay tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. ((hieu ve) OR (hieu van)) cam xuc ban hanh lam ((chau tre) or (chay tren))".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. ((hieu ve) OR (hieu van)) cam xuc ban hanh lam ((chau tre) or (chay tren))*.