Perhaps you should try some spelling variations:
nang chat » nang phat, nang cham, nang cao
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
chat hoa » thuat hoa, chat va, chat huu
va hanh » van hanh, va danh, ban hanh
y nang » ky nang, ly nang, v nang
cao tu » cao thu, co tu, cao su
va cao » va cac, va co, va dao
vi su » va su, ve su, oi su
ki su » ky su

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 chat hoa. lieu va cao tu ((va hanh) or (va thanh)) ((vi su) or (ki su)) tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang chat hoa. lieu va cao tu ((va hanh) OR (va thanh)) ((vi su) OR (ki su)) tien.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang chat hoa. lieu va cao tu ((va hanh) or (va thanh)) ((vi su) or (ki su)) tien*.