Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham luc » cham soc, nhan luc, cham cuu
danh dau » lanh dao, hang dau, danh tu
mai khoi » mai khoa, tai khoa, cac khoi
te sach » toc sach
va danh » va dinh, va dan, va hanh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
ca viet » va viet, co viet, hoa viet
y tang » ky tang, 6 tang, 7 tang
luc va » duc va, tuc va, loc va
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y tang ((ma hoi) or (mai khoi)). hieu ve cham luc va danh dau ((cua triet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang ((ma hoi) OR (mai khoi)). hieu ve cham luc va danh dau ((cua triet) OR (ca viet)).
• Adding a wildcard symbol may retrieve word variants: te sach y tang ((ma hoi) or (mai khoi)). hieu ve cham luc va danh dau ((cua triet) or (ca viet))*.