Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hanh vii » hanh voi, hanh va, hanh noi
tang cac » bang cac, hang cac, tang ca
cac khoi » cac thoi, cac khoan, cach thoi
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu vu » hieu va, hieu ve, dieu vu
ty tang » tay tang, ty xang, ty hang
hieu su » hieu sau, tieu su, hieu so
xuc va » duc va, tuc va, luc va

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 ty tang cac khoi. ((hieu vu) or (hieu su)) cham xuc va ((hanh vii) or (hanh vi)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty tang cac khoi. ((hieu vu) OR (hieu su)) cham xuc va ((hanh vii) OR (hanh vi)) cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ty tang cac khoi. ((hieu vu) or (hieu su)) cham xuc va ((hanh vii) or (hanh vi)) cau tren*.