Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, dua tren
danh ca » dan ca, doanh cua, danh cho
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ty hang
va cham » va chat, va tham
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. hieu ((ve cam) or (va cham)) thuc va danh ca ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. hieu ((ve cam) OR (va cham)) thuc va danh ca ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang x hoi. hieu ((ve cam) or (va cham)) thuc va danh ca ((cua tre) OR (cua triet))*".