Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lay » thanh lap, thanh tay, thanh lam
ban thanh » ban hanh, ban hang
cam tuc » cam xuc, cam tu, nam thuc
cua tre » cua te, cuu tre, dua tren
tuc ban » thuc ban, truc ban, tu ban
sach ky » sac ky, sach y, sach kem
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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) OR (sach ty)) nang x hoi. hieu ve cam tuc ban thanh lay ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach ty)) nang x hoi. hieu ve cam tuc ban thanh lay ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sach ty)) nang x hoi. hieu ve cam tuc ban thanh lay ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sach ty)) nang x hoi. hieu ve cam tuc ban thanh lay ((cua tre) or (cua triet))*.