Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
hang dau » hang va, hang tai
cham luc » cham soc, nhan luc, cham cuu
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hang » van hang, va nang, va lang
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
y tang » 6 tang, 7 tang, 5 tang
luc va » duc va, tuc va, loc va

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) or (ky tang)) ma hoa. hieu ve cham luc va hang dau ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y tang) OR (ky tang)) ma hoa. hieu ve cham luc va hang dau ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y tang) or (ky tang)) ma hoa. hieu ve cham luc va hang dau ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ((y tang) or (ky tang)) ma hoa. hieu ve cham luc va hang dau ((cua triet) OR (va triet))*.