Perhaps you should try some spelling variations:
ve triet » va trien
su triet » su viet, su tien
tinh lap » trinh lap, tinh lao, dinh lap
sach ky » sac ky, sach y, sach ty
va tinh » may tinh
te sach » toc sach
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
nam xuc » cam xuc, nam xua, nam thuc
va nam » van nam, ha nam, va nay
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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 tang ma hoi. hieu va nam xuc va tinh lap ((su triet) OR (ve triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang ma hoi. hieu va nam xuc va tinh lap ((su triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang ma hoi. hieu va nam xuc va tinh lap ((su triet) OR (ve triet))*.