Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
nang tai » hang tai, tang tai, sang tai
nam xuc » cam xuc, nam xua, nam thuc
tai hoi » tai khoi, dai hoi, tai hai
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang tai hoi. hieu van nam xuc ((ban hanh) or (va thanh)) vi ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang tai hoi. hieu van nam xuc ((ban hanh) OR (va thanh)) vi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang tai hoi. hieu van nam xuc ((ban hanh) or (va thanh)) vi ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang tai hoi. hieu van nam xuc ((ban hanh) or (va thanh)) vi ((cua triet) OR (va triet))*.