Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
thu sach » tu sach, thuat sach, thuoc sach
lap cua » lai cua, tap cua, lam cua
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
may hoa » may khoa, ma hoa, day hoa
ke mang » ke nang, ke trang
ky mang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
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: thu sach ((ky mang) OR (ke mang)) may hoa. hieu ve cham ((xuc va) or (thuc vat)) thanh lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky mang) OR (ke mang)) may hoa. hieu ve cham ((xuc va) OR (thuc vat)) thanh lap cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ky mang) OR (ke mang)) may hoa. hieu ve cham ((xuc va) or (thuc vat)) thanh lap cua tre*".