Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
va phan » van phan, va phat, va phap
nang xa » nang x, lang xa, nang ma
suc mat » suc bat, suc manh, nuoc mat
sach ky » sac ky, sach y, sach ty
hang vi » hang va, hanh vi, hang di
suc ma » suc manh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. hieu va phan ((suc mat) OR (suc ma)) hang vi ((va thiet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu va phan ((suc mat) OR (suc ma)) hang vi ((va thiet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu va phan ((suc mat) OR (suc ma)) hang vi ((va thiet) or (su triet))*".