Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
oi su » ki su, vi su

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 y nang xa hoi. hieu ve cam ((xuc van) OR (luc van)) hanh ((oi su) or (va su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ve cam ((xuc van) OR (luc van)) hanh ((oi su) OR (va su)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ve cam ((xuc van) OR (luc van)) hanh ((oi su) or (va su)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ve cam ((xuc van) OR (luc van)) hanh ((oi su) or (va su)) triet*.