Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
tung dan » dung dan, huong dan, trung dai
nhan luc » nang luc
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((tang dai) or (tung dan)) hoi. hieu va nhan luc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((tang dai) OR (tung dan)) hoi. hieu va nhan luc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((tang dai) or (tung dan)) hoi. hieu va nhan luc va hanh vi cua te*.