Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
luc va » duc va, tuc va, loc va
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: te sach ky lang xa hoi. lieu va cham luc va hanh vi ((cau tren) or (((cua tre) OR (cua te))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. lieu va cham luc va hanh vi ((cau tren) OR (((cua tre) OR (cua te)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. lieu va cham luc va hanh vi ((cau tren) or (((cua tre) OR (cua te))))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. lieu va cham luc va hanh vi ((cau tren) or (((cua tre) OR (cua te))))*.