Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, dua tren
hanh le » thanh le, hanh ve, hanh de
luc van » luoc van, luu van, duc van
thu cac » tu cac, thu xac, thu cuc
ky tang » ky nang, ky dang, kho tang
vu cham » vu kham, tu cham, qua cham
tang ha » lang ha, tang ma, trung ha
va cham » va chat, va tham

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu cac ky tang ha noi. hieu ((vu cham) or (va cham)) luc van hanh le ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu cac ky tang ha noi. hieu ((vu cham) OR (va cham)) luc van hanh le ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu cac ky tang ha noi. hieu ((vu cham) or (va cham)) luc van hanh le ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thu cac ky tang ha noi. hieu ((vu cham) or (va cham)) luc van hanh le ((cua tre) OR (cua triet))*.