Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
minh chau » tinh chat
thu sach » tu sach, thuoc sach, thu hoach
va triet » va thiet, va trien, ve triet
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
chau va » chau van, chat va, chau a
hieu va » hieu qua
v nang » va nang, vu nang, van nang
x hoi » xa hoi, o hoi, x ho

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) or (thuat sach)) v nang x hoi. ((hieu va) OR (lieu va)) cam duc van minh chau va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) v nang x hoi. ((hieu va) OR (lieu va)) cam duc van minh chau va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuat sach)) v nang x hoi. ((hieu va) OR (lieu va)) cam duc van minh chau va triet".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) v nang x hoi. ((hieu va) OR (lieu va)) cam duc van minh chau va triet*.