Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
va thanh » gia thanh, ban thanh, va tinh
tu sach » su sach, te sach, tu cach
va hanh » van hanh, va danh, ban hanh
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
di cua » dai cua, doi cua, de cua
ve cau » ke cau, va cau, ve cac
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) y nang ma hoi. hieu ve cau luc ((va hanh) or (va thanh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang ma hoi. hieu ve cau luc ((va hanh) OR (va thanh)) di cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang ma hoi. hieu ve cau luc ((va hanh) or (va thanh)) di cua te*.