Perhaps you should try some spelling variations:
lang van » dang van, hoang van, giang van
tang van » dang van, hoang van, trong van
cau phuc » cau truc, chau phu, huu phuc
tu sach » thu sach, su sach, te sach
qua cau » quan cau, qua cac, qua ca
phuc va » phuc vu, thuc va, chuc va
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
vi cua » vai cua, di cua

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 y ((lang van) OR (tang van)) hoc. hieu qua cau phuc va hanh ((vi cua) or (hai cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((lang van) OR (tang van)) hoc. hieu qua cau phuc va hanh ((vi cua) OR (hai cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((lang van) OR (tang van)) hoc. hieu qua cau phuc va hanh ((vi cua) or (hai cua)) tu".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((lang van) OR (tang van)) hoc. hieu qua cau phuc va hanh ((vi cua) or (hai cua)) tu*.