Perhaps you should try some spelling variations:
nang khai » dang khai, nang hai, quang khai
cau theo » cau thi, cau tao
sach hoa » sach ha, sach hoi, cach hoan
bach hoa » bach khoa, bach ha, cach hoan
cua tre » cua te, cuu tre, cua triet
va nang » van nang, da nang, cam nang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
soc va » hoc va, loc va, doc va
dan xa » dan xac, dan xay, dan ca

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 hoa) OR (bach hoa)) dan xa hoi. hieu ve cham soc va nang khai ((cua tre) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach hoa) OR (bach hoa)) dan xa hoi. hieu ve cham soc va nang khai ((cua tre) OR (cau theo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach hoa) OR (bach hoa)) dan xa hoi. hieu ve cham soc va nang khai ((cua tre) or (cau theo))*".