Perhaps you should try some spelling variations:
sach han » sach tham, sach danh, sach nang
han lang » nhan lang, ban lang, ha lang
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
dau xuc » dau xac, dau nuoc
dau xua » dau cua, dao xuan, dau luan
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: tu sach han lang xa hoi. hieu va ((dau xuc) or (dau xua)) van hanh ((vi cua) or (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach han lang xa hoi. hieu va ((dau xuc) OR (dau xua)) van hanh ((vi cua) OR (di cua)) triet.
• Adding a wildcard symbol may retrieve word variants: tu sach han lang xa hoi. hieu va ((dau xuc) or (dau xua)) van hanh ((vi cua) or (di cua)) triet*.