Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cong cua » cong cu, dong cua, huong cua
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
ve dat » de dat, va dat, viec dat
ve dao » de dao, va dao, ve bao
di cua » dai cua, doi cua, de cua

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 ((ve dat) or (ve dao)) nuoc va hanh ((di cua) or (cong cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. hieu ((ve dat) OR (ve dao)) nuoc va hanh ((di cua) OR (cong cua)) te.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. hieu ((ve dat) or (ve dao)) nuoc va hanh ((di cua) or (cong cua)) te*.