Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
hanh lam » hanh kem, hanh va, dinh lam
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
dac va » duc va, day va, dai va
ha hoi » hoa hoi, ha noi, xa hoi

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 lang ha hoi. hieu va cac ((dac va) OR (dat va)) ((thanh lap) or (hanh lam)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang ha hoi. hieu va cac ((dac va) OR (dat va)) ((thanh lap) OR (hanh lam)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky lang ha hoi. hieu va cac ((dac va) OR (dat va)) ((thanh lap) or (hanh lam)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky lang ha hoi. hieu va cac ((dac va) OR (dat va)) ((thanh lap) or (hanh lam)) cua triet*.