Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
xa hanh » xa thanh, xa khanh, va hanh
cam tuc » cam xuc, cam tu, nam thuc
sach ky » sac ky, sach y, sach ty
te sach » toc sach
hoa doi » hoa dai, hoc doi, xoa doi
hoa hoi » khoa hoi, hoa hoc, hoc hoi
ky lang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
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: te sach ky lang ((hoa hoi) or (hoa doi)). hieu ve cam tuc xa hanh vi ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang ((hoa hoi) OR (hoa doi)). hieu ve cam tuc xa hanh vi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang ((hoa hoi) or (hoa doi)). hieu ve cam tuc xa hanh vi ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang ((hoa hoi) or (hoa doi)). hieu ve cam tuc xa hanh vi ((cua triet) OR (va triet))*.