Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cham luc » cham soc, nhan luc, cham cuu
ve cham » va cham, ve chat, vu cham
tang ma » tang van
hieu ve » hieu va, hieu van
dan va » doan va, dan ca, ban va
va dan » ca dan, va dao, va dau
luc va » duc va, tuc va, loc va
sac ky » cac ky

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

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