Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
ve cam » ve cham, ve cai, ve cau
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
nang o » nang co, nang ho, nang ro
lam va » nam va, dam va, lam ha
ve cac » va cac, vien cac
o hoi » co hoi, o hoc, o hai

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

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