Perhaps you should try some spelling variations:
nhan luc » nang luc
dau cua » day cua, cau cua, dan cua
va danh » va dinh, va dan, va hanh
ve nhan » ve nha, de nhan, va nhan
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty tang » tay tang, ty xang, ty hang
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
ma hoi » mai 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 (xa hoi)). hieu ve nhan luc va danh ((dau cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty tang ((ma hoi) OR (xa hoi)). hieu ve nhan luc va danh ((dau cua) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty tang ((ma hoi) OR (xa hoi)). hieu ve nhan luc va danh ((dau cua) or (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach ty tang ((ma hoi) OR (xa hoi)). hieu ve nhan luc va danh ((dau cua) or (dai cua)) triet*.