Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh lai » hanh lam, hanh tai, thanh lap
lai cuu » lai cua, lai chau, lai cuoc
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va
ma hoi » xa hoi, ma hoa, me hoi

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