Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
cuu tre » cua tre, cau tren, cau treo
tri cuu » tri cua, tra cuu, trinh cuu
va danh » va dinh, va dan, va hanh
va xanh » va hanh, va anh, va banh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
ky tang » ky nang, ky dang, kho tang
ban ky » van ky, dan ky
ma hoi » mai hoi, xa hoi, me hoi
vu ban » tu ban, va ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ban ky tang ((ma hoi) or (ma hoa)). hieu ve cham luc ((va xanh) OR (va danh)) tri cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ban ky tang ((ma hoi) OR (ma hoa)). hieu ve cham luc ((va xanh) OR (va danh)) tri cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ban ky tang ((ma hoi) or (ma hoa)). hieu ve cham luc ((va xanh) OR (va danh)) tri cuu tre*".