Perhaps you should try some spelling variations:
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tri cua, dai cua
te sac » te sach, te cac
te san » te ban, ke san, tu san
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (te san)) ky lang xa hoi. hieu va cam luc va hanh ((tai cua) OR (tai cuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te san)) ky lang xa hoi. hieu va cam luc va hanh ((tai cua) OR (tai cuc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te san)) ky lang xa hoi. hieu va cam luc va hanh ((tai cua) OR (tai cuc)) tre".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te san)) ky lang xa hoi. hieu va cam luc va hanh ((tai cua) OR (tai cuc)) tre*.