Perhaps you should try some spelling variations:
trang xa » trang va, trang ha, trong xa
ve triet » va trien, su triet
cam truc » cau truc, nam truc, lam truoc
va danh » va dinh, va dan, dia danh
tang xa » tang ma, lang xa, tang ha
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
te sai » te tai, te bai, te lai
sai ky » sac ky
va cam » va cham, va cac, va cao
ve ve » de ve, va ve, ke ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky ((tang xa) or (trang xa)) hoi. hieu va cam truc ((va danh) OR (va hanh)) ve ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky ((tang xa) OR (trang xa)) hoi. hieu va cam truc ((va danh) OR (va hanh)) ve ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky ((tang xa) or (trang xa)) hoi. hieu va cam truc ((va danh) OR (va hanh)) ve ve triet".
• Adding a wildcard symbol may retrieve word variants: te sai ky ((tang xa) or (trang xa)) hoi. hieu va cam truc ((va danh) OR (va hanh)) ve ve triet*.