Perhaps you should try some spelling variations:
tham nuoc » thoat nuoc, nha nuoc, pham ngoc
thay nuoc » tray nuoc, thoat nuoc, nha nuoc
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
su triet » su viet, su tien, ve triet
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ma hoi. hieu qua ((tham nuoc) OR (thay nuoc)) van hanh lai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ma hoi. hieu qua ((tham nuoc) OR (thay nuoc)) van hanh lai su triet".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ma hoi. hieu qua ((tham nuoc) OR (thay nuoc)) van hanh lai su triet*.