Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
cam truc » cau truc, nam truc, lam truoc
nam thuc » nam thuoc, am thuc, nam thu
nang ma » tang ma, sang ma, nang cao
han lai » han li, phan loai, nhan loai
han tai » hang tai, nhan tai, van tai
ma hoi » mai hoi, xa hoi, ma hoa
te van » le van, te va, ve van

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

• Performing a fuzzy search may retrieve terms with similar spellings: te van ky nang ma hoi. hieu van ((cam truc) or (nam thuc)) va ((han lai) OR (han tai)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te van ky nang ma hoi. hieu van ((cam truc) OR (nam thuc)) va ((han lai) OR (han tai)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te van ky nang ma hoi. hieu van ((cam truc) or (nam thuc)) va ((han lai) OR (han tai)) su triet".
• Adding a wildcard symbol may retrieve word variants: te van ky nang ma hoi. hieu van ((cam truc) or (nam thuc)) va ((han lai) OR (han tai)) su triet*.