Perhaps you should try some spelling variations:
thi hang » thi hanh, thi nang, thi hong
nhan luc » nang luc
tu sach » thu sach, su sach, te sach
danh va » doanh va, hanh va, anh va
va danh » va dinh, va dan, va hanh
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
ty hang » ly hang, ty xang, thu hang
ty nang » ky nang, ty xang, ly nang
cuu tre » cua tre, cau tren, cau treo
luc va » duc va, tuc va, loc va
va cuu » va cau, va chu, va huu

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 ((ty nang) or (((ty hang) OR (thi hang)))) xa hoi. hieu ve nhan luc va danh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (((ty hang) OR (thi hang)))) xa hoi. hieu ve nhan luc va danh va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) or (((ty hang) OR (thi hang)))) xa hoi. hieu ve nhan luc va danh va cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (((ty hang) OR (thi hang)))) xa hoi. hieu ve nhan luc va danh va cuu tre*.