Perhaps you should try some spelling variations:
ve triet » va trien
su triet » su viet, su tien
van hanh » van thanh, ban hanh, van anh
nang mai » nang ma, nang tai, lang mai
cac xuc » cam xuc, cac nuoc, chat xuc
hanh ki » hanh vi, hanh ky, hanh kien
xuc van » duc van, luc van, vuc van
sach tu » sach thu, sach ty, sach uu
mai hoi » mai khoi, dai hoi, lai hoi
cach tu » cach thuc
hieu va » lieu va, hieu qua

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 tu) OR (cach tu)) nang mai hoi. hieu va cac xuc van hanh ki ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (cach tu)) nang mai hoi. hieu va cac xuc van hanh ki ((su triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tu) OR (cach tu)) nang mai hoi. hieu va cac xuc van hanh ki ((su triet) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) OR (cach tu)) nang mai hoi. hieu va cac xuc van hanh ki ((su triet) or (ve triet))*.