Perhaps you should try some spelling variations:
luoc van » luoc can, luoc va, luot van
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
luc van » luu van, duc van, luc va
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky lang) or (ky tang)) xa hoi. hieu ve cham ((luc van) OR (luoc van)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky lang) OR (ky tang)) xa hoi. hieu ve cham ((luc van) OR (luoc van)) hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky lang) or (ky tang)) xa hoi. hieu ve cham ((luc van) OR (luoc van)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky lang) or (ky tang)) xa hoi. hieu ve cham ((luc van) OR (luoc van)) hanh vi cuu tre*.