Perhaps you should try some spelling variations:
chay tren » thai tren, ca tren, cau tren
hanh lam » thanh lap, hanh kem, hanh va
ban hanh » ban hang
cho tre » cho thue, khoe tre
xuc ban » duc ban, cuc ban, quoc ban
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
tu nong » tu dong, tu cong, tu tong
tu nang » tru nang, tu nano, tu lang
cac xuc » cam xuc, cac nuoc, chat xuc

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 ((tu nang) OR (tu nong)) xa hoi. hieu va cac xuc ban hanh lam ((cho tre) or (chay tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu nang) OR (tu nong)) xa hoi. hieu va cac xuc ban hanh lam ((cho tre) OR (chay tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tu nang) OR (tu nong)) xa hoi. hieu va cac xuc ban hanh lam ((cho tre) or (chay tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu nang) OR (tu nong)) xa hoi. hieu va cac xuc ban hanh lam ((cho tre) or (chay tren))*.