Perhaps you should try some spelling variations:
nhan luc » nang luc
va nhan » van nhan, ca nhan, va phan
nang ma » tang ma, sang ma, nang cao
cua tre » cuu tre, cua triet, dua tren
lang ha » long ha
danh di » danh du, xanh di, danh dien
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
tu sac » tu sach, tu cac, tu san
luc va » duc va, tuc va, loc va
sac ky » cac ky, sai ky
cua te » cua tu

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 ((nang ma) or (lang ha)) hoi. hieu va nhan luc va danh di ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang ma) OR (lang ha)) hoi. hieu va nhan luc va danh di ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang ma) or (lang ha)) hoi. hieu va nhan luc va danh di ((cua tre) OR (cua te))*".