Perhaps you should try some spelling variations:
thien van » thi van
thu sach » thuat sach, thuoc sach, thu hoach
van hanh » van thanh, ban hanh, van anh
tu sach » su sach, te sach, tu cach
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van
nam xuc » cam xuc, nam xua, nam thuc
xuc van » duc van, luc van, vuc van
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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 (thu sach)) y ((mang xa) or (lang xa)) hoi. thien van nam xuc van hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y ((mang xa) OR (lang xa)) hoi. thien van nam xuc van hanh vi cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y ((mang xa) or (lang xa)) hoi. thien van nam xuc van hanh vi cua tu*".