Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hanh tri » thanh tri, hanh tai, hanh trinh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
tri cau » tri cac, tri dau, trinh cau
loc va » luc va
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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