Perhaps you should try some spelling variations:
thien van » thi van
danh vai » danh sai, danh va, doanh van
trung va » truong va, trang va, trung ha
truc va » thuc va, thuc vat
vai cua » dai cua, hai cua, lai cua
tu cach » tu cac
van hoc » van hoa
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet

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

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