Perhaps you should try some spelling variations:
luc nganh » luc ngan, chuc nganh, luat nganh
dat tren » dat trong, dua tren
nha nang » nham nang, nha hang, nha sang
kha nang » phap nang, ky nang, ki nang
cham luc » cham soc, nhan luc, cham cuu
hang vi » hanh vi, hang di, khang voi
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham

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 ((nha nang) or (kha nang)) xa hoi. hieu ve cham luc nganh ((hang vi) OR (hang va)) dat tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((nha nang) OR (kha nang)) xa hoi. hieu ve cham luc nganh ((hang vi) OR (hang va)) dat tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((nha nang) or (kha nang)) xa hoi. hieu ve cham luc nganh ((hang vi) OR (hang va)) dat tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ((nha nang) or (kha nang)) xa hoi. hieu ve cham luc nganh ((hang vi) OR (hang va)) dat tren*.