Perhaps you should try some spelling variations:
duc tren » duoc tren, dua tren, duc tien
nhan luc » nang luc
hieu van » thien van, lieu va, hieu ve
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
te sach » toc sach
hieu va » lieu va, hieu qua
luc cam » luc lam, luc tam, xuc cam
nang oi » nang noi, nang ji, nang si
tu sach » thu sach, su sach, tu cach
oi duc » hoai duc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) ky lang xa hoi. ((hieu van) OR (hieu va)) nhan luc cam nang oi duc tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky lang xa hoi. ((hieu van) OR (hieu va)) nhan luc cam nang oi duc tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky lang xa hoi. ((hieu van) OR (hieu va)) nhan luc cam nang oi duc tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky lang xa hoi. ((hieu van) OR (hieu va)) nhan luc cam nang oi duc tren*.