Perhaps you should try some spelling variations:
thien van » thi van
danh vai » danh sai, danh va, doanh van
vu sach » vu bach, vu khach
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
su sach » so sach
cua tuc » cua duc, cua tu, cua thuoc
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (su sach)) ty nang xa hoi. ((hieu ve) or (thien van)) dat nuoc va danh vai cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ty nang xa hoi. ((hieu ve) OR (thien van)) dat nuoc va danh vai cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) ty nang xa hoi. ((hieu ve) or (thien van)) dat nuoc va danh vai cua tuc".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) ty nang xa hoi. ((hieu ve) or (thien van)) dat nuoc va danh vai cua tuc*.