Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
van hanh » van thanh, ban hanh, van anh
hanh va » hang va, hanh vi
soc van » hoc van, oc van, sac van
va cham » va chat, va tham
tu sach » thu sach, su sach, te sach
nang ma » sang ma, nang cao, mang may
nang xa » nang x, lang xa, mang xa
tang ma » mang may, tang van
va cau » van cau, va cac, va dau

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 y ((nang xa) or (((nang ma) OR (tang ma)))) hoi. lieu va cham soc van hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (((nang ma) OR (tang ma)))) hoi. lieu va cham soc van hanh va cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang xa) or (((nang ma) OR (tang ma)))) hoi. lieu va cham soc van hanh va cau tren*".