Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
soc vay » soc va, sach vay
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (sach ty)) nang xa hoi. hieu ve cham soc vay doanh tai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sach ty)) nang xa hoi. hieu ve cham soc vay doanh tai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) or (sach ty)) nang xa hoi. hieu ve cham soc vay doanh tai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sach ty)) nang xa hoi. hieu ve cham soc vay doanh tai ((cua tre) OR (cuu tre))*.