Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cua triet, dua tren
soc van » hoc van, oc van, sac van
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach uu » sach luu, sach tu, sach xu
sang ma » tang ma, nang ma, sang tao
sach ty » sach y, sach tu, sach thu
cuu tre » cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach uu) or (sach ty)) sang ma hoi. hieu ve cham soc van hanh lai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach uu) OR (sach ty)) sang ma hoi. hieu ve cham soc van hanh lai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach uu) or (sach ty)) sang ma hoi. hieu ve cham soc van hanh lai ((cua tre) or (cuu tre))*.