Perhaps you should try some spelling variations:
cham sac » cham soc, pham sach, cap sac
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
va cham » va chat, va tham
sac van » cac van, san van, sat van
minh vi » minh voi, dinh vi, minh va
ca tren » cau tren, cu tren, la tren
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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 ((y nang) or (v nang)) mai hoi. lieu va cham sac van minh vi ((ca tren) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) mai hoi. lieu va cham sac van minh vi ((ca tren) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) mai hoi. lieu va cham sac van minh vi ((ca tren) or (cua tre))*.