Perhaps you should try some spelling variations:
chau tre » chay tren, chau tho, cho tre
hanh lai » hanh lam, hanh tai, thanh lap
thu sach » thuat sach, thuoc sach, thu hoach
truc va » thuc va, thuc vat, trung va
tu sach » su sach, te sach, tu cach
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
ma hoi » mai hoi, xa hoi, ma hoa
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) OR (thu sach)) ky tang ma hoi. hieu ve cam ((xuc va) or (truc va)) hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky tang ma hoi. hieu ve cam ((xuc va) OR (truc va)) hanh lai chau tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky tang ma hoi. hieu ve cam ((xuc va) or (truc va)) hanh lai chau tre*".