Perhaps you should try some spelling variations:
ly quang » le quang, vu quang
hieu cao » chieu cao, hieu cac, hieu ca
chat luc » chat xuc, chat lua, nhan luc
van hanh » van thanh, ban hanh, van anh
hanh lam » thanh lap, hanh kem, hanh va
va triet » va thiet, va trien, ve triet
vu sach » vu bach, su sach, vu khach
ty hang » ly hang, ty xang, thi hang
luc van » luoc van, luu van, duc van
lam va » nam va, dam va, lam ha

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 ((ty hang) or (ly quang)) xa hoi. hieu cao chat luc van hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ty hang) OR (ly quang)) xa hoi. hieu cao chat luc van hanh lam va triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ((ty hang) or (ly quang)) xa hoi. hieu cao chat luc van hanh lam va triet*.