Perhaps you should try some spelling variations:
nganh hang » ngan hang, nhanh thang, nganh thanh
dau tren » dau tien, dat tren, dau tieng
toc sach » hoc sach, doc sach, thuoc sach
hang vi » hang va, hanh vi, hang di
cam luc » cau luc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
vi dau » vi dai, va dau, bi dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) ty nang xa hoi. hieu ve ((cam luc) or (cam xuc)) nganh hang vi dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty nang xa hoi. hieu ve ((cam luc) OR (cam xuc)) nganh hang vi dau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty nang xa hoi. hieu ve ((cam luc) or (cam xuc)) nganh hang vi dau tren".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ty nang xa hoi. hieu ve ((cam luc) or (cam xuc)) nganh hang vi dau tren*.