Perhaps you should try some spelling variations:
cac treo » cac tro, cau treo, cac trieu
hanh tri » thanh tri, hanh tai, hanh trinh
tri cac » tri mac, tai cac, tri dac
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
loc va » hoc va, luc va
te cac » ve cac, te cao, de cac

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

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