Perhaps you should try some spelling variations:
thien van » thi van
nam duoc » nam thuoc, da duoc, dat duoc
danh vai » danh sai, danh va, doanh van
dang van » hoang van, hang va
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
nam duc » pham duc, nam thuc, nam buoc
ky dang » ky nang, ky danh
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thu hoach)) ky dang van hoa. thien van ((nam duc) OR (nam duoc)) va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu hoach)) ky dang van hoa. thien van ((nam duc) OR (nam duoc)) va danh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thu hoach)) ky dang van hoa. thien van ((nam duc) OR (nam duoc)) va danh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu hoach)) ky dang van hoa. thien van ((nam duc) OR (nam duoc)) va danh vai cua te*.