Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thu sach » tu sach, thuat sach, thuoc sach
tham xuc » tham nuoc, pham duc, cam xuc
nang mai » nang ma, lang mai, nang cai
nang tai » hang tai, tang tai, sang tai
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
cu tren » tu tren, dua tren
vi cu » vi su, vi xu, vi du

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 mai) or (nang tai)) hoi. lieu va ((tham xuc) OR (tham thuc)) va hanh vi cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((nang mai) OR (nang tai)) hoi. lieu va ((tham xuc) OR (tham thuc)) va hanh vi cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((nang mai) or (nang tai)) hoi. lieu va ((tham xuc) OR (tham thuc)) va hanh vi cu tren".
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((nang mai) or (nang tai)) hoi. lieu va ((tham xuc) OR (tham thuc)) va hanh vi cu tren*.