Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
manh han » manh hai, manh hon, anh han
tu sach » thu sach, su sach, te sach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cam suc » cam xuc, cao suc, cham soc
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, dua tren
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 y ((nang xa) OR (lang xa)) hoi. hieu ve cam suc manh han tai ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang xa) OR (lang xa)) hoi. hieu ve cam suc manh han tai ((cua tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) OR (lang xa)) hoi. hieu ve cam suc manh han tai ((cua tre) or (cua triet))*.