Perhaps you should try some spelling variations:
loai tren » la tren, thai tren
cham xuc » cam xuc, chat xuc, cham soc
cau tren » cu tren, dau tren, ca tren
thanh vi » thanh va, thanh ve, nhanh vi
thu sach » tu sach, thuat sach, thuoc sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
xuc van » duc van, luc van, vuc van

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