Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
toc sach » hoc sach, doc sach, thuoc sach
cam thuc » am thuc, nam thuc, cam thu
thi van » thi lan, thi hanh, thi nang
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
ky anh » ky danh, ly anh, ty anh
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: toc sach ((ky anh) or (ky nang)) xa hoi. ((thien van) OR (thi van)) cam thuc va hanh trinh cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky anh) OR (ky nang)) xa hoi. ((thien van) OR (thi van)) cam thuc va hanh trinh cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ky anh) or (ky nang)) xa hoi. ((thien van) OR (thi van)) cam thuc va hanh trinh cua te*".