Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
cuu tre » cau tren, cau treo
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cua tre » cua te, cua triet, dua tren
truc va » thuc va, thuc vat, trung va
te san » te ban, ke san, tu san
loc va » hoc va, luc va
san ky » sang ky, van ky, dan ky
va cam » va cham, va cac, va cao

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

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