Perhaps you should try some spelling variations:
thuoc sach » hoc sach, thuat sach, thuoc sinh
nuoc sach » nguoi sach, hoc sach, cuoc cach
cua tre » cuu tre, cua triet, dua tren
hanh va » hang va, hanh vi
xa hanh » xa thanh, xa khanh, va hanh
cac duc » cac du, cao duc, cac dac
hieu va » lieu va, hieu qua
nong xa » song xa, dong xa, nong va
tu nong » tu dong, tu cong, tu tong
duc xa » duoc xa, tuc xa, duc va
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: ((nuoc sach) or (thuoc sach)) tu nong xa hoi. hieu va cac duc xa hanh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (thuoc sach)) tu nong xa hoi. hieu va cac duc xa hanh va ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (thuoc sach)) tu nong xa hoi. hieu va cac duc xa hanh va ((cua tre) or (cua te))*.