Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
cac treo » cac tro, cau treo, cac trieu
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » hieu qua
tri cac » tri mac, tai cac, tri dac
te cac » tu cac, ve cac, te cao
tuc va » thuc va, truc va, tuc xa
loc va » hoc va, luc 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 cac ky lang xa hoi. ((hieu va) OR (lieu 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 ky lang xa hoi. ((hieu va) OR (lieu 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 ky lang xa hoi. ((hieu va) OR (lieu va)) cam ((tuc va) or (loc va)) hanh tri cac treo".
• Adding a wildcard symbol may retrieve word variants: te cac ky lang xa hoi. ((hieu va) OR (lieu va)) cam ((tuc va) or (loc va)) hanh tri cac treo*.