Perhaps you should try some spelling variations:
thanh vinh » thanh binh, than kinh, thanh van
thanh tinh » thanh binh, nhanh tinh, than kinh
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
van lam » van nam
y nang » ky nang, ly nang, v nang
va lam » va lap
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ((va lam) or (van lam)) tuc xa ((thanh vinh) OR (thanh tinh)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((va lam) OR (van lam)) tuc xa ((thanh vinh) OR (thanh tinh)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu ((va lam) or (van lam)) tuc xa ((thanh vinh) OR (thanh tinh)) cau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((va lam) or (van lam)) tuc xa ((thanh vinh) OR (thanh tinh)) cau tren*.