Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh van
thanh hai » thanh phan, thanh hoa, thanh san
thu sach » tu sach, thuat sach, thuoc sach
duc manh » suc manh, duc anh, duc minh
va triet » va thiet, va trien, ve triet
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ma hoi. hieu va cac ((duc manh) or (duc tan)) ((thanh lap) OR (thanh hai)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. hieu va cac ((duc manh) OR (duc tan)) ((thanh lap) OR (thanh hai)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ma hoi. hieu va cac ((duc manh) or (duc tan)) ((thanh lap) OR (thanh hai)) va triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. hieu va cac ((duc manh) or (duc tan)) ((thanh lap) OR (thanh hai)) va triet*.