Perhaps you should try some spelling variations:
chay tren » thai tren, ca tren, cau tren
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chau tho, cho tre, cau tren
thu sach » tu sach, thuat sach, thuoc sach
ban hanh » ban hang
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc ban » duc ban, cuc ban, quoc ban
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cau tra » ca tra, cau ra, cau truc
ve cac » va cac, vien cac

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