Perhaps you should try some spelling variations:
thien van » thi van
dua tren » dung tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
danh vi » hanh vi, dinh vi, danh di
cu tren » tu tren
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 ky nang x ho. thien van cam ((xuc va) OR (tuc va)) danh vi ((cu tren) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x ho. thien van cam ((xuc va) OR (tuc va)) danh vi ((cu tren) OR (dua tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x ho. thien van cam ((xuc va) OR (tuc va)) danh vi ((cu tren) or (dua tren))*".