Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
ve triet » va trien, su triet
nang cai » nang cao, nang tai, nang cap
sach ly » sach y, sach lo, sach ty
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
vu sach » vu bach, su sach, vu khach
hieu va » lieu va, hieu qua
hieu ve » hieu van
cai hoi » cau hoi, dai hoi, cai hoa
ly nang » ky nang, ly hang, ly vang
luc va » duc va, tuc va, loc va

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