Perhaps you should try some spelling variations:
tay quang » tai quang, tao quang, vay quang
tac quang » thac quang, tac quan, tai quang
bat thanh » ban thanh, bac thanh, dat thanh
thanh tai » thanh hai, thanh toan, doanh tai
nhan luc » nang luc
va triet » va thiet, va trien, ve triet
vu sach » vu bach, su sach, vu khach
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luc bat » suc bat, luc nhat, luat bat
tai va » thai va, mai va, tri va

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 ((tay quang) or (tac quang)) ma hoa. hieu va nhan luc bat thanh tai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((tay quang) OR (tac quang)) ma hoa. hieu va nhan luc bat thanh tai va triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ((tay quang) or (tac quang)) ma hoa. hieu va nhan luc bat thanh tai va triet*.