Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
hieu van » hieu va, thien van, lieu va
chau tre » chay tren, chau tho, cau tra
hanh lai » hanh lam, hanh tai, thanh lap
soc manh » suc manh, ho manh, duc manh
van cham » van chat, van tham, va cham
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
so sach » so sanh, bo sach, co sach
cho tre » cho thue, khoe tre
ma hoi » mai hoi, xa hoi, ma hoa

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ky nang ma hoi. hieu van cham soc manh hanh lai ((chau tre) OR (cho tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (so sach)) ky nang ma hoi. hieu van cham soc manh hanh lai ((chau tre) OR (cho tre))~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ky nang ma hoi. hieu van cham soc manh hanh lai ((chau tre) OR (cho tre))*.