Perhaps you should try some spelling variations:
lieu van » lieu va, sieu van, lieu nano
hieu van » hieu va, thien van, lieu va
hau truc » cau truc, hang truc, hoc truc
phan tri » phan thi, thanh tri, chan troi
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
va phan » van phan, va phat, va phap
cua su » qua su

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) or (te sach)) ky nang xa hoi. ((lieu van) OR (hieu van)) hau truc va phan tri cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang xa hoi. ((lieu van) OR (hieu van)) hau truc va phan tri cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang xa hoi. ((lieu van) OR (hieu van)) hau truc va phan tri cua su".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang xa hoi. ((lieu van) OR (hieu van)) hau truc va phan tri cua su*.