Perhaps you should try some spelling variations:
nganh hang » ngan hang, nhanh thang, nganh thanh
sach tham » sach nha
luc nganh » luc ngan, chuc nganh, luat nganh
cham luc » cham soc, nhan luc, cham cuu
dat tren » dat trong, dua tren
tu sach » thu sach, su sach, te sach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
hang vi » hang va, hanh vi, hang di
vi dat » voi dat, vi dai, va dat

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 tham ((nang xa) OR (lang xa)) hoi. hieu ve cham luc nganh hang vi dat tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tham ((nang xa) OR (lang xa)) hoi. hieu ve cham luc nganh hang vi dat tren".
• Adding a wildcard symbol may retrieve word variants: tu sach tham ((nang xa) OR (lang xa)) hoi. hieu ve cham luc nganh hang vi dat tren*.