Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
soc manh » suc manh, ho manh, duc manh
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
vi cua » vai cua, di cua
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: su sach ky ((nang ma) OR (tang ma)) hoi. ((hieu ve) or (hieu va)) cham soc manh hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang ma) OR (tang ma)) hoi. ((hieu ve) OR (hieu va)) cham soc manh hanh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang ma) OR (tang ma)) hoi. ((hieu ve) or (hieu va)) cham soc manh hanh vi cua te*".