Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cham xuc » cam xuc, chat xuc, cham soc
van hanh » van thanh, ban hanh, van anh
thu sach » thuat sach, thuoc sach, thu hoach
ke trang » ke toan
trang xa » trang va, trang ha, trong xa
xuc van » duc van, luc van, vuc van
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cua te » cua tu

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