Perhaps you should try some spelling variations:
chay tren » thai tren, ca tren, cau tren
lai chay » lai chau, lam chay, lai chang
hanh lai » hanh lam, hanh tai, thanh lap
trang xa » trang va, trang ha, trong xa
thu sach » tu sach, thuat sach, thuoc sach
tang xa » tang ma, lang xa, tang ha
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
tu cach » tu cac
soc va » hoc va, loc va, doc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ky ((tang xa) OR (trang xa)) hoi. hieu va cham soc va hanh lai chay tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky ((tang xa) OR (trang xa)) hoi. hieu va cham soc va hanh lai chay tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thu sach)) ky ((tang xa) OR (trang xa)) hoi. hieu va cham soc va hanh lai chay tren".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ky ((tang xa) OR (trang xa)) hoi. hieu va cham soc va hanh lai chay tren*.