Perhaps you should try some spelling variations:
chau tho » chat thom, cau thi, phu tho
hanh lai » hanh lam, hanh tai, thanh lap
truc va » thuc va, thuc vat, trung va
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
lai hoi » dai hoi, lai hoa, lai roi
mai hoi » mai khoi, dai hoi, mai doi
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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 tang ((mai hoi) OR (lai hoi)). hieu ve cam ((xuc va) or (truc va)) hanh lai chau tho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang ((mai hoi) OR (lai hoi)). hieu ve cam ((xuc va) OR (truc va)) hanh lai chau tho*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang ((mai hoi) OR (lai hoi)). hieu ve cam ((xuc va) or (truc va)) hanh lai chau tho*".