Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
luc va » tuc va, loc va
ve cam » ve cham, ve cac, va cam
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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 ky nang o hai. hieu ve cam ((duc va) or (luc va)) thanh lam ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang o hai. hieu ve cam ((duc va) OR (luc va)) thanh lam ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang o hai. hieu ve cam ((duc va) or (luc va)) thanh lam ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang o hai. hieu ve cam ((duc va) or (luc va)) thanh lam ((cua triet) OR (su triet))*.