Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
dinh su » dinh so, hinh su, dinh cu
ve cam » ve cham, ve cac, va cam
su va » su van, tu va

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 nang mai hoi. hieu ve cam ((xuc van) or (duc van)) dinh su va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang mai hoi. hieu ve cam ((xuc van) OR (duc van)) dinh su va triet.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang mai hoi. hieu ve cam ((xuc van) or (duc van)) dinh su va triet*.