Perhaps you should try some spelling variations:
thien van » thi van
thu sach » thuat sach, thuoc sach, thu hoach
nam thuc » nam thuoc, am thuc, nam tu
hanh vai » hanh vi, hanh va, hanh tai
tu sach » su sach, te sach, tu cach
nang ma » tang ma, sang ma, nang cao
xa hanh » xa thanh, xa khanh, va hanh
vai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, ma hoa
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: ((thu sach) or (tu sach)) ky nang ma hoi. thien van ((nam thuc) or (nam thu)) xa hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ky nang ma hoi. thien van ((nam thuc) OR (nam thu)) xa hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) ky nang ma hoi. thien van ((nam thuc) or (nam thu)) xa hanh vai cua te*.