Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
lang van » dang van, tang van, hoang van
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay
thuc va » thuc vat, thuc dan, thuc day
te sac » te sach, te cac, te san
va cam » va cham, va cac, va cao
sac ky » cac ky, sai ky
cua te » cua tu

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 ky ((lang xa) or (lang van)) hoi. hieu va cam ((thuc va) or (hoc va)) hanh tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((lang xa) OR (lang van)) hoi. hieu va cam ((thuc va) OR (hoc va)) hanh tri cua te.
• Adding a wildcard symbol may retrieve word variants: te sac ky ((lang xa) or (lang van)) hoi. hieu va cam ((thuc va) or (hoc va)) hanh tri cua te*.