Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
vu cach » va cach, vu bach, tu cach
ve cach » va cach, ve cac, ve canh
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tu ang » tu lang, tu anc, tu anh
ang xa » lang xa, mang xa, dang xay
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu cach) OR (ve cach)) tu ang xa hoi. ((lieu va) or (hieu qua)) cam luc va hanh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu cach) OR (ve cach)) tu ang xa hoi. ((lieu va) OR (hieu qua)) cam luc va hanh tri cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu cach) OR (ve cach)) tu ang xa hoi. ((lieu va) or (hieu qua)) cam luc va hanh tri cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu cach) OR (ve cach)) tu ang xa hoi. ((lieu va) or (hieu qua)) cam luc va hanh tri cua tre*.