Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
chat duc » chat xuc, chat doc, chet duoc
duc manh » suc manh, duc anh, duc minh
su sach » so sach, vu sach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
va chat » van chat, va phat, cao chat
hoi cua » hoi chuc
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky lang) OR (ky tang)) xa hoi. lieu va chat duc manh hanh ((vi cua) or (hoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky lang) OR (ky tang)) xa hoi. lieu va chat duc manh hanh ((vi cua) OR (hoi cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) OR (ky tang)) xa hoi. lieu va chat duc manh hanh ((vi cua) or (hoi cua)) tre*".