Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh lap » thanh san, phan lap, thanh hai
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tay hoi, thao hoc
ve pham » v pham, ve phan, ve phat
lap cua » lai cua, tap cua, lam cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky sang ((tao hoi) or (tao boi)). hieu ((ve pham) OR (vi pham)) duc va thanh lap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky sang ((tao hoi) OR (tao boi)). hieu ((ve pham) OR (vi pham)) duc va thanh lap cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky sang ((tao hoi) or (tao boi)). hieu ((ve pham) OR (vi pham)) duc va thanh lap cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky sang ((tao hoi) or (tao boi)). hieu ((ve pham) OR (vi pham)) duc va thanh lap cua te*.