Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
hanh thai » hinh thai, hanh tai, anh thai
va triet » va thiet, va trien, ve triet
nang cai » nang cao, nang tai, nang cap
cuu tre » cua tre, cau tren, cau treo
vu sach » vu bach, su sach, vu khach
cam luc » cam xuc, cau luc
hieu ve » hieu va, hieu van
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, va cam

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