Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
vinh cuu » dinh cuu, sinh cua, dinh cu
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
nam luc » nang luc, nam thuc, nam duoc
y nang » ky nang, ly nang, v nang
vi cuu » vi luu

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 y nang cao hoi. hieu van ((nam luc) or (nhan luc)) van hanh ((vi cuu) OR (vinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cao hoi. hieu van ((nam luc) OR (nhan luc)) van hanh ((vi cuu) OR (vinh cuu)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang cao hoi. hieu van ((nam luc) or (nhan luc)) van hanh ((vi cuu) OR (vinh cuu)) tre*".