Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
cua triet » cua viet, su triet, va triet
nang cai » nang cao, nang tai, nang cap
cua tre » cua te, cuu tre, dua tren
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
cai hoi » cau hoi, dai hoi, cai hoa
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang cai hoi. hieu ((ve cam) OR (va cam)) luc va hanh thai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang cai hoi. hieu ((ve cam) OR (va cam)) luc va hanh thai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang cai hoi. hieu ((ve cam) OR (va cam)) luc va hanh thai ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang cai hoi. hieu ((ve cam) OR (va cam)) luc va hanh thai ((cua tre) or (cua triet))*.