Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
tai cuu » tai buu, tai cua, thai cua
y nang » ky nang, ly nang, v nang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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 nang xa hoi. hieu ((ve cam) OR (ve cac)) suc manh hanh ((tai cuu) or (tai cuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve cam) OR (ve cac)) suc manh hanh ((tai cuu) OR (tai cuc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ((ve cam) OR (ve cac)) suc manh hanh ((tai cuu) or (tai cuc)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve cam) OR (ve cac)) suc manh hanh ((tai cuu) or (tai cuc)) tre*.