Perhaps you should try some spelling variations:
nang lai » nang tai, mang lai, nang cai
duc manh » suc manh, duc anh, duc minh
ve triet » va trien, su triet
tu sach » thu sach, su sach, te sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
lai roi » lai hoi, loi roi
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
duc van » duc va, duc tan, duc phan
anh ki » anh kinh, anh kiem, anh kien
ki ve » ke ve, gi ve, vi ve

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 vu nang lai roi. hieu va chat ((duc van) or (duc manh)) anh ki ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vu nang lai roi. hieu va chat ((duc van) OR (duc manh)) anh ki ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach vu nang lai roi. hieu va chat ((duc van) or (duc manh)) anh ki ve triet*.