Perhaps you should try some spelling variations:
mang lai » mang lam, mang luoi, dang loai
va hanh » van hanh, va thanh, va danh
te sach » toc sach
ky mang » ky nang, ke mang, ky dang
lai roi » lai hoi, loi roi
hieu su » hieu sau, tieu su, hieu so
su chao » su cao, sau chan
di cua » doi cua, de cua, do cua
tu sac » tu sach, tu cac, tu san
xu va » xu van, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (te sach)) ky mang lai roi. hieu su chao xu va hanh ((di cua) OR (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (te sach)) ky mang lai roi. hieu su chao xu va hanh ((di cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (te sach)) ky mang lai roi. hieu su chao xu va hanh ((di cua) OR (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (te sach)) ky mang lai roi. hieu su chao xu va hanh ((di cua) OR (dai cua)) te*.