Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
danh day » danh dau, dan day, doanh dao
cham luc » cham soc, nhan luc, cham cuu
hieu ve » hieu van
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
tang xa » trang xa, tang ma, lang xa
te sach » toc sach
y tang » ky tang, 6 tang, 7 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 xa hoi. ((hieu ve) or (hieu va)) cham luc va danh day ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang xa hoi. ((hieu ve) OR (hieu va)) cham luc va danh day ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y tang xa hoi. ((hieu ve) or (hieu va)) cham luc va danh day ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: te sach y tang xa hoi. ((hieu ve) or (hieu va)) cham luc va danh day ((cua triet) OR (va triet))*.