Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
hieu ve » hieu van
hieu va » lieu va
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang mai khoi. ((hieu ve) or (((hieu va) OR (hieu qua)))) cam tuc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang mai khoi. ((hieu ve) OR (((hieu va) OR (hieu qua)))) cam tuc va hanh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang mai khoi. ((hieu ve) or (((hieu va) OR (hieu qua)))) cam tuc va hanh vi cuu tre*".