Perhaps you should try some spelling variations:
thue trong » thuc trong, thuat trong, thuoc trong
sach thue » sach thu, sach thieu, sach tham
trong va » trong van, trong ca, trong cac
qua cham » qua hai, qua cac, va cham
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
cham tu » pham tu, cam tu, chai tu
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thue trong va hoi. hieu qua cham tu va hanh vi ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thue trong va hoi. hieu qua cham tu va hanh vi ((cua tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach thue trong va hoi. hieu qua cham tu va hanh vi ((cua tre) or (su triet))*.