Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
hanh thai » nhanh thai, hanh tai, anh thai
ve triet » va trien, su triet
nang dai » nang dau, nang tai, lang dai
cuu tre » cua tre, cau tren, cau treo
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
dai hoi » dai hoc, dai hai, dai moi
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang
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 dai hoi. hieu ve cam luc va ((hanh thai) OR (hinh thai)) ((cuu tre) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang dai hoi. hieu ve cam luc va ((hanh thai) OR (hinh thai)) ((cuu tre) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang dai hoi. hieu ve cam luc va ((hanh thai) OR (hinh thai)) ((cuu tre) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang dai hoi. hieu ve cam luc va ((hanh thai) OR (hinh thai)) ((cuu tre) or (ve triet))*.