Perhaps you should try some spelling variations:
thien van » thi van
cau treo » cau theo, cau tren, cau triet
cam thuc » am thuc, cam thu, can thuc
lanh hai » manh hai, thanh hai, lang chai
nam thuc » nam thuoc, am thuc, nam thu
hai cau » hai chau, hai chu, hai hau
va lanh » va lang, va danh, va hanh
vu sach » vu bach, su sach, vu khach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ly nang ((ma hoi) or (xa hoi)). thien van ((cam thuc) OR (nam thuc)) va lanh hai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly nang ((ma hoi) OR (xa hoi)). thien van ((cam thuc) OR (nam thuc)) va lanh hai cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ly nang ((ma hoi) or (xa hoi)). thien van ((cam thuc) OR (nam thuc)) va lanh hai cau treo".
• Adding a wildcard symbol may retrieve word variants: vu sach ly nang ((ma hoi) or (xa hoi)). thien van ((cam thuc) OR (nam thuc)) va lanh hai cau treo*.