Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
thanh lam » hanh lam, thanh nam, thanh tam
hieu van » hieu va, thien van, lieu va
chu duc » thu duc, chua duoc, cuu duoc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cau duc » cao duc, cau luc, cau truc
nang ho » nang hoc, nang co, tang ho
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

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