Perhaps you should try some spelling variations:
ngang duoc » nganh duoc, nhan duoc
tu ngang » tu ngan, hu angang, vu ngan
duoc hoi » quoc hoi, duoc hoc, duoc si
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va, hieu qua
nam luc » nhan luc, nam thuc, nam duoc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
va cau » van cau, va cac, va dau

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 tu ngang duoc hoi. hieu va ((nam luc) or (nang luc)) va hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ngang duoc hoi. hieu va ((nam luc) OR (nang luc)) va hanh va cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach tu ngang duoc hoi. hieu va ((nam luc) or (nang luc)) va hanh va cau tren*.