Perhaps you should try some spelling variations:
thien van » thi van
danh vai » danh sai, danh va, doanh van
sach thu » sach thue, sach thieu, sach tham
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, xach tay
nang xa » nang x, lang xa, nang ma
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 ty) OR (sach thu)) 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 ty) OR (sach thu)) 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 ty) OR (sach thu)) 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 ty) OR (sach thu)) nang xa hoi. ((hieu ve) or (thien van)) dat nuoc va danh vai cua tuc*.