Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
chay tren » thai tren, ca tren, cau tren
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chau tho, cho tre, cau tra
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc ban » cuc ban, quoc ban, xuat ban
duc ban » duc tan, duc van, dua ban
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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

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