Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhan luc » nang luc
dau cua » dai cua, day cua, cau cua
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
sach ty » sach y, sach tu, sach thu
te sach » toc sach
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ty tang » tay tang, ty xang, ty hang
ve nhan » ve nha, de nhan, va nhan
ma hoi » xa hoi, ma hoa, me hoi

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