Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nang tai » hang tai, tang tai, nang cao
sang tai » hang tai, sang tao, tang tai
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
cam luc » cam xuc
sach ty » sach y, sach tu, sach thu
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: thuoc sach ty ((nang tai) OR (sang tai)) hoi. lieu va ((cam luc) or (cau luc)) va hanh vi cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty ((nang tai) OR (sang tai)) hoi. lieu va ((cam luc) OR (cau luc)) va hanh vi cu tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ty ((nang tai) OR (sang tai)) hoi. lieu va ((cam luc) or (cau luc)) va hanh vi cu tren*".