Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
hoa chat » hop chat, hoa phan
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, vu cham
chat te » chat deo, chat tai, chat beo
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu ((ve cac) or (ve cham)) duc ((va thanh) OR (ban thanh)) hoa chat te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang x hoi. hieu ((ve cac) OR (ve cham)) duc ((va thanh) OR (ban thanh)) hoa chat te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang x hoi. hieu ((ve cac) or (ve cham)) duc ((va thanh) OR (ban thanh)) hoa chat te*".