Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
xuc van » duc van, luc van, xuc ban
sach ky » sac ky, sach y, sach kem
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
do tren » dong tren, duoc tren, do trung

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) OR (sach ty)) lang xa hoi. hieu ve cham xuc van hanh vi ((cau tren) or (do tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach ty)) lang xa hoi. hieu ve cham xuc van hanh vi ((cau tren) OR (do tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sach ty)) lang xa hoi. hieu ve cham xuc van hanh vi ((cau tren) or (do tren))".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sach ty)) lang xa hoi. hieu ve cham xuc van hanh vi ((cau tren) or (do tren))*.