Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
danh tu » anh tu, doanh thu
luc van » luoc van, luu van, duc van
xuc van » duc van, vuc van, xuc ban
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
tu cua » hu cua, vu cua

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

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