Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hang » ngan hang
hieu van » hieu va, thien van, lieu va
hai hai » khai hai, dai hai, tai hai
hai hoi » dai hoi, hai moi, hai hoa
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
xuc ban » duc ban, cuc ban, quoc ban
hang vi » hang va, hanh vi, hang di
cua tre » cua te, cuu tre, dua tren
te sach » toc sach

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

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