Perhaps you should try some spelling variations:
xang van » dang van, tang van, nang van
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
nam luc » nang luc, nhan luc, nam thuc
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((xang van) OR (lang van)) hieu. hieu van nam luc va hanh ((vi cua) or (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((xang van) OR (lang van)) hieu. hieu van nam luc va hanh ((vi cua) OR (di cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((xang van) OR (lang van)) hieu. hieu van nam luc va hanh ((vi cua) or (di cua)) triet*".