Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
cau triet » cau trieu, su triet, cua triet
nang mai » nang ma, nang tai, lang mai
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
tuc va » truc va, tuc xa, duc va
ve cam » ve cham, ve cac, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang mai hoi. hieu ve cam ((tuc va) OR (thuc va)) thanh loi ((cua tre) OR (cau triet))~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang mai hoi. hieu ve cam ((tuc va) or (thuc va)) thanh loi ((cua tre) or (cau triet))*.